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The Alaska Boeing E-3 Sentry accident was the September 22, 1995 crash of a United States Air Force Boeing E-3 Sentry airborne early warning aircraft with the loss of all 24 crewmembers on board.[2] The aircraft, serial number 77-0354 with callsign Yukla 27, hit birds on departure from Elmendorf Air Force Base in Alaska, United States. With the loss of thrust from both of the left engines the aircraft crashed into a wooded area less than a mile from the end of the runway.[1]

United States Air Force Flight 27
Accident
DateSeptember 22, 1995 (1995-09-22)
SummaryBird strike on take off
SiteNear Elmendorf Air Force Base, Alaska, United States
61°15′56.99″N 149°45′38.53″W
Aircraft
Aircraft typeBoeing E-3B Sentry
OperatorUnited States Air Force
Call signYUKLA 27
Registration77-0354
Flight originElmendorf Air Force Base
Crew24 [1]
Fatalities24
Survivors0

Accident


A briefing at the accident site.
A briefing at the accident site.

The Sentry was being operated by the 962d Airborne Air Control Squadron and was scheduled for a training sortie with the callsign Yukla 27. The aircraft was to depart from runway 06 and was waiting while a C-130 Hercules transport aircraft took off ahead of it. With its crew unaware that the Hercules had disturbed a flock of Canada geese, the Sentry lined up and started its departure roll. As the E-3 rotated it ingested multiple birds into its number 1 and 2 engines . The crew started to dump fuel and initiated a turn to the left to return to the airfield, but with a full fuel load and having lost two engines on the same wing, it was unable to maintain altitude. After the aircraft reached 250 feet it descended and crashed into a hilly, wooded area, and exploded.[1]


Investigation


Yukla 27 Memorial at Joint Base Elmendorf-Richardson.
Yukla 27 Memorial at Joint Base Elmendorf-Richardson.

The investigation concluded that the probable cause was the ingestion of Canada geese into the number 1 and 2 engines. Other factors included the insufficient efforts of the air base to deter the birds, and the failure of the air traffic control tower to report to both the Sentry and the airfield management that birds were present on the airfield.[1]

The sequence of events during impact was also determined. The aircraft struck the ground nose first and slid to the top of a hill, where the empennage (tail section) broke off. "As the [aircraft] cleared the second hill, it rolled over. The fuselage broke up as the [aircraft] rolled. The outboard right wing impacted on the left side of the wreckage, the right-hand wing broke off and the rotodome section impacted on its back, breaking up the rest of the aircraft."[3]

Investigators reviewed the flight and wreckage path of the accident aircraft. "The [aircraft] lifted off and flew approximately [1.28 kilometers (0.8 mile)] before contacting trees," the report said. "The [aircraft] then flew approximately [0.72 kilometers (0.45 mile)] before making contact with the ground and crashing in a fireball."[3]


Aircraft


77-0356, sister ship to the accident aircraft involved
77-0356, sister ship to the accident aircraft involved

The Boeing E-3 Sentry serial number 77-0354 was built as an E-3A variant with the Boeing construction number 21554 and line number 933. It first flew on July 5, 1978 and was delivered to the United States Air Force on January 19, 1979. It was later modified by Boeing to E-3B standard.[2]

This aircraft was used on the first day of the Desert Storm air war, with its crew controlling the intercept and shootdown of four Iraqi fighter aircraft in far western Iraq.[citation needed]

The aircraft was also involved in the April 14, 1994 Black Hawk shootdown incident in Iraq, during which its crew were controlling two F-15 Eagle fighter aircraft that shot down a pair of US Army UH-60 Blackhawk helicopters, killing 26 military and civilian personnel.[citation needed]


See also





References


Notes
  1. Accident description at the Aviation Safety Network
  2. Pither 1998, pp. 403-404
  3. "Military Boeing 707 Strikes Birds After Liftoff;Damage to Engines No. 1 and No. 2 Results in Loss of Power and Impact with Terrain" (PDF). flightsafety.org. Retrieved 15 January 2015.
Sources

На других языках


- [en] 1995 Alaska Boeing E-3 Sentry accident

[ru] Катастрофа Boeing E-3 в Анкоридже

Катастрофа Boeing E-3 в Анкоридже — авиационная катастрофа, произошедшая 22 сентября 1995 года близ аэродрома Элемендорфruen. Авиалайнер Boeing E-3B Sentry, принадлежащий ВВС США, столкнулся с птицами после взлёта с аэродрома. При возвращении на аэродром, самолёт столкнулся с деревьями, упал в лес, полностью разрушился и сгорел. Все находившиеся на борту 24 членов экипажа погибли.



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