# Incident 19920927044029I: Boeing 747121, Ontario, CA, September 27, 1992

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 27, 1992, 04:24 local time
- Place: Ontario, CA
- Airport: Ontario International Airport
- Damage: Minor damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Air carrier (Part 121)
- Operator: IPXA
- Location: 34.0560° N, 117.6012° W: Placed by OpenAirDocs at ONTARIO INTL (ONT), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.0560&lon=-117.6012&mi=10
- Aircraft: N681UP, a cancelled registration (https://openairdocs.org/deregistered/N681UP-2011-12-08) (OpenAirDocs)
- Registry model: Boeing 747-121 (registry code 1384871, https://openairdocs.org/model/boeing-747-121) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT9D-3A (registry code 52050, https://openairdocs.org/engine/pratt-whitney-jt9d-3a) (OpenAirDocs)
- Reported make and model: BOEING 747121
- People aboard: 3
- Fatal injuries: 0
- Pilot flight hours: 9,600 total, 471 in this make and model, 83 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19920927044029I

## Narrative

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

UNABLE TO MAINTAIN PRESSURIZATION. DIVERTED TO ONTARIO. FOUND L-1 AFT CRANK ARM DOOR LOCKING DEVICE HAD SHEARED.

## Other reports on N681UP (2)

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

- [Incident 19940919038919I](https://openairdocs.org/incident/19940919038919I), Sep 19, 1994: Boeing 747121 (N681UP), Portland, OR, Minor damage. Hydraulic failure on approach. Landed ok. Flex line at trunnion leaked. Powered steering. Bogie tilt damaged.
- [Incident 19920319014969I](https://openairdocs.org/incident/19920319014969I), Mar 19, 1992: Boeing 747121 (N681UP), Louisville, KY, Minor damage. Wing tip struck the blast fence while making a turn. Under the direction of a marshaller.

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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