- Date
- February 15, 1971
- Place
- Dulles Int Apt, DC · DULLES INT APT, DC
- Injuries
- 62 uninjured
- Damage
- No damage
- Phase of flight
- Enroute
- Aircraft
- N7644UBoeing 727
- Status
- Completed · report July 13, 1972
- Report
- Brief approved by the director
- Case key
- 161313
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 4-0023 71/2/15 DULLES INT APT,DC BOEING 727 CR- 0 0 6 SCHED DOM PASSG SRV AIRLINE TRANSPORT, AGE TIME - 0830 N7644U PX- 0 0 56 49, 19414 TOTAL HOURS, DAMAGE-NONE OT- 0 0 0 1011 IN TYPE, INSTRUMENT RATED. CLASSIFIED AS INCIDENT NAME OF AIRPORT - DULLES INT APT OPERATOR - UNITED AIR LINES,INC. DEPARTURE POINT INTENDED DESTINATION BUFFALO,NY ATLANTA,GA TYPE OF ACCIDENT PHASE OF OPERATION MISCELLANEOUS IN FLIGHT: CLIMB TO CRUISE PROBABLE CAUSE(S) SYSTEMS - FLIGHT CONTROL SYSTEMS: WING FLAP CONTROL SYSTEM HYDRAULIC MISCELLANEOUS ACTS,CONDITIONS - STUCK MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT SUSPECTED MECHANICAL DISCREPANCY REMARKS- OUTBD TRAILING EDGE FLAPS STUCK AT 2 DEG DUE FAULTY INDICATOR. ACFT WAS DIVERTED TO DULLES,LND OK.
Aircraft
- Registration
- N7644U
- Reported as
- Boeing 727
- Category
- Airplane
- Engine
- turbo fan
- Damage
- No damage
- Airport
- Dulles Int Apt
N7644URegistration cancelled Jun 15, 2017 · Boeing 727-222Airframe modelBoeing 727-222Engine modelPratt & Whitney JT8D-5
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.