# Incident 19810720054829I: Boeing 747121, San Francisco, CA, July 20, 1981

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: July 20, 1981, 21:08 local time
- Place: San Francisco, CA
- Airport: International
- Damage: Minor damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: Air carrier (Part 121)
- Operator: PAAA
- 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: N742PA, a cancelled registration (https://openairdocs.org/deregistered/N742PA-1992-02-28) (OpenAirDocs)
- Registry model: Boeing 747-121 (registry code 1384871, https://openairdocs.org/model/boeing-747-121) (OpenAirDocs)
- Reported make and model: BOEING 747121
- People aboard: 239
- 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/19810720054829I

## Narrative

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

NUMBER 4 ENGINE WAS SHUT DOWN DUE TO A FIRE WARNING LIGHT ACTIVATION. FOUND BAD ALTERNATOR CONSTANT SPEED DRIVE.

## Other reports on N742PA (7)

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

- [Incident 19910617028329I](https://openairdocs.org/incident/19910617028329I), Jun 17, 1991: Boeing 747121 (N742PA), Houston, TX. Engine failure. Diverted to Houston. Replaced NR1 engine fuel control unit line PS4.
- [Incident 19841114067119I](https://openairdocs.org/incident/19841114067119I), Nov 14, 1984: Boeing 747121 (N742PA), Gander, CN, Minor damage. Engine shutdown due to low oil pressure. Fire noted in gear box. Hole in gear box caused by magnesium fire.
- [Incident 19811106079229I](https://openairdocs.org/incident/19811106079229I), Nov 6, 1981: Boeing 747121 (N742PA), Agana, Guam. Aircraft returned when engine backfired and EGT peaked off scale. Metal found in tail pipe nr 1 engine.
- [Incident 19800229028119I](https://openairdocs.org/incident/19800229028119I), Feb 29, 1980: Boeing 747121 (N742PA), Houston, TX. Engine flameout, unable to restart. Engine vane control unison ring stuck open.
- [Incident 19800228030359I](https://openairdocs.org/incident/19800228030359I), Feb 28, 1980: Boeing 747121 (N742PA), Houston, TX. Nr 2 engine shutdown due to low oil pressure, low quanity and high temperature. Replace damaged o ring.
- [Incident 19790404013539I](https://openairdocs.org/incident/19790404013539I), Apr 4, 1979: Boeing 747121 (N742PA), Jamaica, NY, Minor damage. Engine shut down due to fire warning light, returned. Loose 3 nut in fuel pressure transmitter line.
- [Incident 19780116003199I](https://openairdocs.org/incident/19780116003199I), Jan 16, 1978: Boeing 747121 (N742PA), Jamaica, NY, Minor damage. After replacing start valve and motorizing engine fire was observed in tail pipe. Fire confined to engine.

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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