Vliegtuigongeval op 15 AUG 1959 met Boeing 707-123 N7514A - Calverton-Peconic River Airport, NY (CTO)
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Status:Accident investigation report completed and information captured
Datum:zaterdag 15 augustus 1959
Tijd:16:42
Type:Silhouette image of generic B701 model; specific model in this crash may look slightly different
Boeing 707-123
Luchtvaartmaatschappij:American Airlines
Registratie: N7514A
Constructienummer: 17641/36
Bouwjaar: 1959-05-06 (3 months)
Aantal vlieguren:736
Motoren: 4 Pratt & Whitney JT3C-6
Bemanning:slachtoffers: 5 / inzittenden: 5
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 5 / inzittenden: 5
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:5 km (3.1 mijl) NE of Calverton-Peconic River Airport, NY (CTO) (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Training
Vliegveld van vertrek:Calverton-Peconic River Airport, NY (CTO), Verenigde Staten
Vliegveld van aankomst:Calverton-Peconic River Airport, NY (CTO), Verenigde Staten
Vluchtnummer:AA514
Beschrijving:
The Boeing 707, named "Flagship Connecticut", was being operated on a training flight. It departed New York-Idlewild at 13:40. Training flight 514 accomplished high altitude air work after takeoff to permit sufficient fuel burnoff for airport transition training which was planned at Peconic River Airport (CTO).
The 707 arrived in the Peconic area about 15:11.
The crew of flight 514 accomplished several maneuvers, including full-stop landings, crosswind landings and takeoffs, a high off-set approach, simulated engine(s) out landings, and a no-flap aborted approach to landing.
The aircraft did not retract its landing gear following the last aborted approach to landing on runway 23 but continued in the traffic pattern at an estimated altitude of 1,000-1,100 feet. The crew reported on left base leg for runway 23, was given clearance to land, and was informed that the wind was from 230 degrees at 10 to 15 knots.
As it approached the extended centerline of runway it made a left bank, steepening to approximately 45 degrees. The aircraft was then observed to recover immediately to level flight and to begin a bank to the right which became progressively steeper. The right bank continued until the aircraft was inverted, at which time the nose dropped and a yaw to the left was observed. The 707 then continued to roll to the right in a nosedown configuration. The wings then levelled. Investigation revealed the aircraft struck the ground in a wings-level attitude, in a nearly stalled condition, yawed to the left approximately 12 degrees, with considerable and nearly symmetrical power. A fire erupted.

Probable Cause:

PROBABLE CAUSE: "The crew failed to recognize and correct the development of excessive yaw which caused an unintentional rolling manoeuvre at an altitude too low to permit complete recovery."

Accident investigation:

cover
Investigating agency: CAB
Status: Investigation completed
Accident number: final report
Download report: Final report

Bronnen:
» ICAO Circular 64-AN/58 (35-40)


Veiligheidsmaatregelen
Subsequent to the accident, the Federal Aviation Agency (FAA) discontinued the requirement that Boeing 707 aircraft make actual landings with simulated failure of 50 percent of the power units concentrated on one side of the aircraft during training flights, type ratings, and proficiency checks. These maneuvers may now be simulated at an appropriate higher altitude.
On February 5, 1960, Boeing issued a service bulletin for an improved rudder modification which adds boost power to the wider ranges of directional movement, and gives increased control capability at low airspeeds and minimum gross weight. This modification also replaces the original rudder with an improved version.

Foto's

photo of Boeing-707-123-N7514A
accident date: 15-08-1959
type: Boeing 707-123
registration: N7514A
 

Kaart

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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