# Incident 19910917058129I: Boeing 747227B, Pacific Ocean, September 17, 1991

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 17, 1991, 01:19 local time
- Place: Pacific Ocean
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: NWAA
- Aircraft: N635US, a cancelled registration (https://openairdocs.org/deregistered/N635US-2007-09-26) (OpenAirDocs)
- Registry model: Boeing 747-227B (registry code 1384888, https://openairdocs.org/model/boeing-747-227b) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT9D-3A (registry code 52050, https://openairdocs.org/engine/pratt-whitney-jt9d-3a) (OpenAirDocs)
- Reported make and model: BOEING 747227B
- People aboard: 423
- Fatal injuries: 0
- Pilot flight hours: 17,651 total, 4,159 in this make and model, 109 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910917058129I

## Narrative

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

PILOT INADVERTENTLY LOADED INCORRECT COORDINATES INTO INERTIAL NAVIGATION SYSTEM. HAD GROSS NAVIGATIONAL ERROR.

## Other reports on N635US (3)

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

- [Incident 19961026038439I](https://openairdocs.org/incident/19961026038439I), Oct 26, 1996: Boeing 747227B (N635US), Minneapolis, MN. Narrative: during rotation on msp departure, #3 engine experienced two compressor stalls. EGT rose to 850 degrees celsius for approximately 5 minutes. Epr was…
- [Incident 19880219071531I](https://openairdocs.org/incident/19880219071531I), Feb 19, 1988: Boeing 747227B (N635US), Chicago, IL. ATC operational error led to reduced clearance between two aircraft during takeoff from different runways.
- [Incident 19870716051899I](https://openairdocs.org/incident/19870716051899I), Jul 16, 1987: Boeing 747227B (N635US), Seattle, WA, Minor damage. The right wing escape slide separated inflight causing some property damage. Under investigation.

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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