# Incident 19990710019039I: Boeing 757223, Kansas City, MO, July 10, 1999

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: July 10, 1999, 13:37 local time
- Place: Kansas City, MO
- Airport: Kansas City International
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: AALA
- Location: 39.2976° N, 94.7139° W: Placed by OpenAirDocs at KANSAS CITY INTL (MCI), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2976&lon=-94.7139&mi=10
- Aircraft: N639AA, a cancelled registration (https://openairdocs.org/deregistered/N639AA-2018-09-10) (OpenAirDocs)
- Registry model: Boeing 757-223 (registry code 1384957, https://openairdocs.org/model/boeing-757-223) (OpenAirDocs)
- Registry engine: Rolls-Royce RB-211 series (registry code 54555, https://openairdocs.org/engine/rolls-royce-rb-211-series) (OpenAirDocs)
- Reported make and model: BOEING 757223
- Reported engine: RROYCE RB211535C37
- People aboard: 5
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990710019039I

## Narrative

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

(-5)AMERICAN AIRLINES FLIGHT # 181, A BOEING B-757-223 AIRCRAFT, N639AA, DEPARTED LOGAN INTL AIRPORT (BOS) ON JULY 10, 1999, ENROUTE TO LOS ANGELES INTL AIRPORT (LAX). WHILE AT CRUISE, THE FLIGHT CREW OBSERVED THE RIGHT ENGINE OIL QUANTITY DROP TO ZERO FOLLOWED BY A RISING OIL TEMPERATURE AND OIL PRESSURE DROPPING TO ZERO.  AS A RESULT OF THIS OBSERVATION, THE FLIGHT CREW IMMEDIATELY SHUT DOWN THE RIGHT ENGINE WHEN THE OIL PRESSURE WAS AT 30 PSI AND MONITORED THE ENGINE FOR A 15 MINUTE WINDMILL.  THE FLIGHT CREW DIVERTED TO KANSAS CITY INTL AIRPORT (MCI) AND LANDED WITHOUT FURTHER INCIDENT.  AMERICAN AIRLINES DESPATCHED A FIELD TRIP OF MECHANICS FROM AMERICAN AIRLINES REPAIR STATION IN TEXAS TO MCI ON JULY 11, 1999.  AMERICAN AIRLINES MECHANICS DISCOVERED THAT THE RIGHT ENGINE AIR TURBINE STARTER HAD A SEIZED FAILURE MOST PROBABLY CAUSED BY A SHEERED SHAFT START VALVE FAILURE IN FLIGHT THAT SUBSEQUENTLY CAUSED THE ENGINE GEAR BOX TO FAIL.  THE RIGHT ENGINE GEAR BOX AND ACCESSORIES WERE REPLACED.  THIS INCIDENT NUMBER CE99IAC0072 IS CLOSED.

## Other reports on N639AA (1)

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

- [Incident 19910314011399I](https://openairdocs.org/incident/19910314011399I), Mar 14, 1991: Boeing 757223 (N639AA), Pittsburgh, PA. Left hydraulic system failed. Landed safely. Found b nut loose where line attaches to brake metering valve.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.