# Incident 19780918019759I: Boeing 727222, San Francisco, CA, September 18, 1978

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 18, 1978, 17:40 local time
- Place: San Francisco, CA
- Airport: International
- Damage: Minor damage
- Phase of flight: Final Approach-IFR
- Operating rules: Air carrier (Part 121)
- Operator: UAL
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Aircraft: N7644U, a cancelled registration (https://openairdocs.org/deregistered/N7644U-2017-06-15) (OpenAirDocs)
- Registry model: Boeing 727-222 (registry code 1384073, https://openairdocs.org/model/boeing-727-222) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT8D-5 (registry code 52046, https://openairdocs.org/engine/pratt-whitney-jt8d-5) (OpenAirDocs)
- Reported make and model: BOEING 727222
- People aboard: 81
- Fatal injuries: 0
- Pilot flight hours: 0 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19780918019759I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

CREW REPORTED LOUD NOISE AND YAW AS WING FLAPS WERE EXTENDED FOR LANDING. PARTIAL LOSS OF INBOARD FLAP IN FLGHT.

## Other reports on N7644U (4)

Matched to the same aircraft by N-number and date.

- [Incident 20050502006569I](https://openairdocs.org/incident/20050502006569I), May 2, 2005: Boeing 727222 (N7644U), Lincoln, NE. (-23) Ctt flight 109 enroute from den to mke experienced a smoke detector light illuminate during flight. Reset system, light re-illuminated. Cat's (central…
- [Incident 20031105028309I](https://openairdocs.org/incident/20031105028309I), Nov 5, 2003: Boeing 727222 (N7644U), St Louis, MO. (-23) Ryan flight 128 declared emergency due to loss of oil pressure on #3 engine. Aircraft diverted to stl and landed without incident. Maintenance found oil…
- [Incident 19880926063659I](https://openairdocs.org/incident/19880926063659I), Sep 26, 1988: Boeing 727222 (N7644U), Chicago, IL. Unable to retract right gear. Returned. Found APU transfer beam left in place after maintenance.
- [Incident 19850208009229I](https://openairdocs.org/incident/19850208009229I), Feb 8, 1985: Boeing 727222 (N7644U), Kansas City, MO. Missed high speed turnoff on rollout. During turn to double back left main went off taxiway into mud.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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