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46-600: Despite being officially retired, one C-9B, BuNo 161529, was seen as late as November 2020 being operated by the U.S. Air Force as an experimental sensor testbed. In 1966, the U.S. Air Force identified a need for an aeromedical transport aircraft and ordered C-9A Nightingale aircraft the following year. Deliveries began in 1968. The U.S. Air Force received 21 C-9A aircraft from 1968 to 1969. The C-9As were used for medical evacuation , passenger transportation, and special missions from 1968 to 2005. The C-9A were named for English social reformer Florence Nightingale (1820–1910),

92-464: A broadcast calendar as the basis for their fiscal year. Fiscal years' names are often shortened based on the year in which they end ; for example, "fiscal year 2023-2024" and "FY24" are synonymous. The fiscal year for individuals and entities to report and pay income taxes is often known as the taxpayer's tax year or taxable year. Taxpayers in many jurisdictions may choose their tax year. Some federal countries, such as Canada and Switzerland, require

138-443: A January–December financial year, becoming the first Indian state to do so. But later it dropped the idea due to Many financial & accounting error. In Indonesia , since 2001, the fiscal year is the calendar year, 1 January to 31 December. Until 2000, the fiscal year ran from 1 April to 31 March; fiscal year 2000 ran from 1 April to 31 December. In Iran , the fiscal year usually starts on 21st or 22 March (1st of Farvardin in

184-467: A certain aircraft as it approaches while taxiing into or out of parking spots or elsewhere around an airfield. Each Navy and Marine Corps aircraft normally has its Bureau Number plus the type designation marked in small letters on the rear fuselage. Sometimes the last four digits of the serial are painted on the fuselage or vertical stabilizer fin. Sometimes the last three digits are used as the side codes also known as nose numbers or MODEXs (most commonly in

230-490: A fiscal year basis, but others are charged on an anniversary basis. Some companies, such as Cisco Systems , end their fiscal year on the same day of the week each year: the day that is closest to a particular date (for example, the Friday closest to 31 December). Under such a system, some fiscal years have 52 weeks and others 53 weeks. The calendar year is used as the fiscal year by about 65% of publicly traded companies in

276-485: A higher maximum gross take-off weight of 110,000 lb (50,000 kg). Auxiliary fuel tanks were installed in the lower cargo hold to augment the aircraft's range to nearly 2,600 nautical miles (4,800 km) for overseas missions, along with the addition of tail mounted infrared scramblers to counter heat seeking missile threats in hostile environments. The C-9B aircraft have provided cargo and passenger transportation as well as forward deployed air logistics support for

322-450: A minimum of four digits to five digits and in 1957 all serials were limited to five digits (for example KC-135R 58-0001 is marked as 80001 ). The system is still in use. An aircraft in the first 10 units purchased in the fiscal year is often referred to as "Balls-(number)" – for example, NASA's B-52B, the oldest B-52 in service until its retirement, was known as Balls 8 . Aircraft that use the tactical style of marking (for example AF80 020 to

368-435: A prefix or nearby. Whatever the serial presentation on the fin, the full fiscal serial is always presented in a technical data block, which is normally on the port (left) side near the cockpit. Often a portion of the aircraft serial number is also painted on the aircraft nose (as is done with helicopters) or on the nose landing gear door (as is done on fighters and bombers) to help ground and aircrew personnel speedily identify

414-465: A short time, but in 1917 they were replaced with the single letter A for an aeroplane . The numbers were official designating numbers , but became known as Bureau Numbers (BuNos) due to their assignment by the Navy Bureau of Aeronautics . In 1930, the service ceased using the A prefix; the last such serial was A-9204. In 1935, when the sequence reached 9999, the sequence was restarted at 0001. At

460-400: A year ending 30 June on the following dates: Victoria changed in 1870, South Australia in 1874, Queensland in 1875, Western Australia in 1892, New South Wales in 1895 and Tasmania in 1904. The Commonwealth adopted the near-ubiquitous financial year standard since its inception in 1901. The reason given for the change was for convenience, as Parliament typically sits during May and June, while it

506-501: The North American A-36 Apache usually had its serial showing on the fuselage instead — with the first digit of the fiscal year being omitted. The serial would not be allowed to be less than four digits (for example B-45 serial number 47-007 was marked 7007 ), but there was no upper limit (for example YP-59A 42-108783 was marked as 2108783 ). When the original fiscal year of a serial became ten years earlier than

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552-592: The Solar Hejri calendar ) and concludes on next year's 20th or 21 March (29th or 30th of Esfand in the Solar Hijri calendar ). In Ireland , the fiscal year is the calendar year, 1 January to 31 December. Until 2001, it was the year ending 5 April, as in the United Kingdom, but was changed with the introduction of the euro . The 2001 tax year was nine months, from April to December. In Israel ,

598-578: The United States , all military aircraft display a serial number to identify individual aircraft. These numbers are located on the aircraft tail, so they are sometimes referred to unofficially as "tail numbers". On the Northrop Grumman B-2 Spirit bomber, lacking a tail, the number appears on the nose gear door. Individual agencies have each evolved their own system of serial number identification. Aircraft serials are part of

644-660: The Aircraft Visual Identification System, which also includes the aircraft's tail code and Modex . In 1908, the United States government purchased its first heavier than air aircraft. The aircraft, a Wright Model A , was used by the aviation section of the United States Army Signal Corps and was issued with serial number 1. Subsequent aircraft were numbered in sequence. In 1918, the aviation section of

690-741: The Army Air Service became the United States Army Air Service (USAAS), but the sequence of numbers started in 1908 continued without change. In 1920, the USAAS became independent from the Signal Corps, and by 1921 the sequence had reached 68000. On 1 July 1921, a new serial system was introduced that was based on the United States Fiscal Year , which continues to the present day. For example,

736-515: The Marine Corps in 1976 with the first two aircraft being delivered to the Marine Corps at MCAS Cherry Point, the second two delivered to VR-1 at NAS Norfolk and the last two delivered to VR-30 at NAS Alameda. An additional ten more new and ten used DC-9s were purchased and converted to C-9B for the Navy. The last C-9B to fly for the Navy was retired on 28 June 2014. Many of the Navy's C-9Bs had

782-698: The Navy and Marine Corps . (The original "Skytrain" was the World War II era C-47 developed from the civilian DC-3 .) A C-9B was also chosen by NASA for reduced gravity research, replacing the aging KC-135 Vomit Comet . The C-9B squadron (VR) were located throughout the continental U.S. , with detachments operated in Europe , and Asia . Data from Encyclopedia of World Air Power General characteristics Performance Avionics Related development Aircraft of comparable role, configuration, and era Related lists BuNo In

828-518: The Navy to fly its own passenger/cargo jets shortly thereafter. The Navy ordered eight aircraft, bureau numbers 159113 thru 159120. The first four went to VR-30 at NAS Alameda in California for west coast logistical support while the second four went to VR-1 at Norfolk in Virginia for east coast support. An additional six aircraft, bureau numbers 160046 through 160051 were delivered to the Navy and

874-793: The Persian or Solar Hijri calendar used in Afghanistan at the time. Following transfer of power to the Taliban administration in September 2021, Afghanistan abandoned the Solar Hijri calendar in favour of the Lunar Hijri calendar . The fiscal cycle was restarted with effect from 1   Muharram 1444 AH (30   July 2022) In Australia , a fiscal year is commonly called a "financial year" (FY) and starts on 1 July and ends on

920-471: The Treasury were assigned their own sequence beginning with 1 . The early Army aircraft had large black serials marked on the fin or rudder, and in 1917 it was usual to prefix the serial with SC for signal corps, or later AS for aerial service. Later, the prefixes were not always marked and were eventually dropped. From 1942, the serial number was applied to the fin (or boom if a helicopter) — alternatively,

966-629: The UK calendar despite being listed in India. Companies following Indian fiscal year get to know their economic health on 31 March of every Indian financial or fiscal year. The current fiscal year was adopted by the colonial British government in 1867 to align India's financial year with that of the British Empire. Prior to 1867, India followed a fiscal year that ran from 1 May to 30 April. On 4 May 2017, Madhya Pradesh announced that it would move to

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1012-646: The USN P-3C Orion and P-8A Poseidon fleet), but on most operational aircraft this is normally a squadron assigned code instead of a shortened serial number. Fiscal year#United States A fiscal year (also known as a financial year , or sometimes budget year ) is used in government accounting, which varies between countries, and for budget purposes. It is also used for financial reporting by businesses and other organizations. Laws in many jurisdictions require company financial reports to be prepared and published on an annual basis but generally with

1058-418: The United States and for most large corporations in the United Kingdom. That is the case in many countries around the world with a few exceptions such as Australia, New Zealand, and Japan. Many universities have a fiscal year which ends during the summer to align the fiscal year with the academic year (and, in some cases involving public universities, with the state government's fiscal year) and also because

1104-429: The calendar year. Significant exceptions include: Many jurisdictions require that the tax year conform to the taxpayer's fiscal year for financial reporting. The United States is a notable exception: taxpayers may choose any tax year, but must keep books and records for such year. In some jurisdictions, particularly those that permit tax consolidation , companies that are part of a group of businesses must use nearly

1150-400: The current fiscal year, the tail number was often prefixed with a zero, for example, 0-16717 instead of 16717 for UH-1H fiscal serial 66-16717. This was for disambiguation purposes, to avoid confusion with tail numbers for later fiscal years. The practice was generally abandoned in the 1980s. The notion that it was O for Obsolete is a widespread myth. In 1956, the fin serials were changed from

1196-408: The end of a week (e.g., 52 or 53 weeks in length, and therefore is not exactly one calendar year in length), or opt for its financial year to end on a date that matches the reporting cycle of its foreign parent. All entities within the one group must use the same financial year. For government accounting and budget purposes, pre- Federation colonies changed the financial year from the calendar year to

1242-656: The first aircraft to be procured with the fiscal year 1960 funds was a Boeing B-52H serialized 60-001 . In 1926, when the USAAS became the United States Army Air Corps (USAAC), the sequence continued unchanged. In late June 1941 , when the USAAC became the United States Army Air Forces (USAAF), the sequence continued unchanged, and the displayed number, normally shown on the fixed vertical stabilizer's sides, usually omitted

1288-675: The first digit of the year of the contract issuance. In 1947, when the USAAF became the United States Air Force (USAF), the sequence continued unchanged. Although USAF was independent of the Army, Army aircraft continued to be allocated in the same numeric sequence until 1967. In 1967, the United States Army continued to use the fiscal year serials, but the numeric element was started at 15000 for each year. In 1971,

1334-556: The fiscal year is 1 July to 30 June. In France , the fiscal year is the calendar year, 1 January to 31 December, and has been since at least 1911. In Germany, the fiscal year runs from 1 January until 31 December. In Greece , the fiscal year is the calendar year, 1 January to 31 December. In Hong Kong , the government's financial year runs from 1 April to 31 March. However, a company incorporated in Hong Kong can determine its own financial year-end, which may be different from

1380-485: The fiscal year is the calendar year, 1 January to 31 December. In Italy , the fiscal year is the calendar year, 1 January to 31 December. It was changed in 1965, before which it was 1 July to 30 June. In Japan , the government's financial year is from 1 April to 31 March. Japan's income tax year is 1 January to 31 December, but corporate tax is charged according to the corporation's own annual period; most Japanese corporations elect their annual period to follow

1426-407: The fiscal year is the calendar year, 1 January to 31 December. In Bulgaria , the fiscal year is the calendar year, 1 January to 31 December, both for personal income tax and for corporate taxes. In Canada , the government's financial year is 1 April to 31 March. (Q1 1 April – 30 June, Q2 1 July – 30 Sept, Q3 1 Oct – 31 Dec and Q4 1 Jan – 31 Mar) For individual taxpayers,

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1472-434: The fiscal year is the calendar year, 1 January to 31 December. In China , the fiscal year for all entities is the calendar year, 1 January to 31 December, and applies to the tax year, statutory year, and planning year. In Colombia , the fiscal year is the calendar year, 1 January to 31 December. In Costa Rica , the fiscal year is the calendar year. January to December. As of 2019 when the tax laws changed. In Egypt ,

1518-615: The founder of modern nursing . After selecting a modified DC-9 for passenger and cargo transport, the U.S. Navy ordered its first five C-9Bs, bureau numbers 159030 thru 159034. However, since the Air Force was responsible for moving military personnel from place to place in the early 1970s under the Military Airlift Command, this order was canceled. The Navy documented to Congress that their people were being given last seating on Air Force flights. Congress authorized

1564-427: The government fiscal year (1 April to 31 March). In Lithuania , the fiscal year is the calendar year, 1 January to 31 December. In Macau , the government's financial year is 1 January to 31 December. In Malaysia , the tax year for individuals is the calendar year, from 1 January to 31 December. The Companies Act 2016 does not state when the fiscal year must start for companies, so businesses are free to choose

1610-583: The government fiscal year. In India , the government's financial year runs from 1 April to 31 March the following year. The financial year from 1 April 2024 to 31 March 2025 would generally be abbreviated as FY 2024-25 or( FY24-25) ( FY2024/25),(FY2024/2025),(FY24/25), but it may also be called FY 2025 or FY25 on the basis of the ending year. Companies following the Indian Depositary Receipt (IDR) are given freedom to choose their financial year. For example, Standard Chartered's IDR follows

1656-424: The left and below the wing tail code) are also referred to as 'balls'. This is a combination of the two consecutive zeros, one from the last digit in the build year and the other from the first digit in the aircraft number. In 1969, camouflaged tactical aircraft were marked with a modified presentation with the fiscal year followed by the last three digits of the serial number. Also, the letters AF were often added as

1702-402: The next 30 June. Financial years are designated by the calendar year of the second half of the period. For example, financial year 2025 is the 12-month period ending on 30 June 2025 and can be referred to as FY2024/25. It is used for official purposes, by individual taxpayers and by the overwhelming majority of business enterprises. Business enterprises may opt to use a financial year that ends at

1748-434: The provincial or cantonal tax year to align with the federal year. In the United States, most states retained a 30 June fiscal year-end date when the federal government switched to 30 September in 1976. Nearly all jurisdictions require that the tax year be 12 months or 52/53 weeks. However, short years are permitted as the first year or when changing tax years. Most countries require all individuals to pay income tax based on

1794-460: The reporting period not aligning with the calendar year (1 January to 31 December). Taxation laws generally require accounting records to be maintained and taxes calculated on an annual basis, which usually corresponds to the fiscal year used for government purposes. The calculation of tax on an annual basis is especially relevant for direct taxes , such as income tax. Many annual government fees—such as council tax and license fees, are also levied on

1840-468: The same fiscal year (differences of up to three months are permitted in some jurisdictions, such as the US and Japan), with consolidating entries to adjust for transactions between units with different fiscal years, so the same resources will not be counted more than once or not at all. In Afghanistan , from 2011 to 2021, the fiscal year began on 1   Hamal (20th or 21 March). The fiscal year aligned with

1886-544: The sequence was started at 20000 and was not restarted with each fiscal year. In 1911, the United States Navy (USN) purchased its first aircraft, a Curtiss Triad pusher floatplane. The Navy allocated a prefix for each manufacturer, and the first aircraft was serialized A-1 , with A allocated to Curtiss. Different letters were also allocated to the same manufacturer, but for different types of aircraft, for example, Curtiss amphibians were allocated E. In early 1914,

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1932-566: The start of the 1940s, so many aircraft were purchased that surviving aircraft from the first sequence could be confused with second-series aircraft, and the sequence was stopped at 7303. In 1940, the third sequence was started at 00001 (with five digits). When the third sequence reached 99999, it continued with six digits which continues to date. In 1926, the United States Coast Guard purchased its own aircraft, and they were assigned one or two-digit serial numbers. In 1934,

1978-471: The system was changed to a three-digit number with the first digit indicating an aircraft type. In 1936, this was changed again, and all aircraft (including those withdrawn from use) were allocated serials starting with V101. In 1945, the V prefix was removed and replaced with digit 1 to make four-digit serial numbers, which continues to the present. Since 1969, executive aircraft operated for the Secretary of

2024-430: The system was changed to a two-letter type/sub-type system, with each having a sequence starting from 1. A was allocated for heavier-than-air types, for example, AB was a flying boat and AX was an amphibian. All surviving aircraft from the original system were resealed. In 1917, the individual number sequences were stopped, and a combined sequential numerical system was started at number 51. Prefix letters were retained for

2070-625: The university is normally less busy during the summer months. In the Northern Hemisphere , that is July to the next June. In the Southern Hemisphere , that is the calendar year, January to December. In a similar fashion, many nonprofit performing arts organizations will have a fiscal year which ends during the summer, so that their performance season that begins in the fall and ends in the spring will be within one fiscal year. Some media/communication-based organizations use

2116-456: Was difficult for it to meet in November and December to pass a budget. The Financial year is split into four quarters which cover the following periods: In Austria , the fiscal year is the calendar year, 1 January to 31 December. In Bangladesh , the fiscal year is 1 July to the next 30 June. In Belarus , the fiscal year is the calendar year, 1 January to 31 December. In Brazil ,

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