# Incident 19990701022179I: Fokker F28MK4000, Fresno, CA, July 1, 1999

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: July 1, 1999, 07:30 local time
- Place: Fresno, CA
- Airport: Fresno Yosemite International Airport
- Phase of flight: Climb
- Operating rules: Air carrier (Part 121)
- Operator: QXEA
- Location: 36.7766° N, 119.7188° W: Placed by OpenAirDocs at FRESNO YOSEMITE INTL (FAT), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.7766&lon=-119.7188&mi=10
- Aircraft: N491US, a cancelled registration (https://openairdocs.org/deregistered/N491US-2006-02-15) (OpenAirDocs)
- Registry model: Fokker F.28 MK4000 (registry code 4990810, https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Reported make and model: FOKKER F28MK4000
- People aboard: 2
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990701022179I

## Narrative

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

(FROM -23) ON 07-01-1999, AT APPROX. 0730 AM PDT, F-28 MK4000, N491US, QXEA-OPERATED FLIGHT 2188 DEPARTED FAT TO SEA TEC. WHEN CLIMBING AFTER TAKE OFF, UTILITY HYDRAULIC QUANTITY WAS OBSERVED TO BE DECREASING.  THE FLAPS WOULD NOT RETRACT AND THE AIRCRAFT TURNED BACK FOR LANDING WITHOUT INCIDENT AT FAT.  MAINTENANCE PERSONNEL FOUND THE FLAP CONTROL UNIT RUPTURED AND FAILTURE OF THE HOUSING AND MOUNTING ATTACHMENT.

## Other reports on N491US (1)

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

- [Incident 19980308018179I](https://openairdocs.org/incident/19980308018179I), Mar 8, 1998: Fokker F28MK4000 (N491US), Portland, OR. Mmel per MEL caused fuel imbalance. Returned. Revised MEL procedures and ops.

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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