# SDR USAASB99304

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N438US](https://openairdocs.org/aircraft/N438US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24560
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Indicator
- Part number: 2061141
- Condition: Failed
- Location: Cockpit
- Part time: 32,750 hours
- Stage of operation: AP
- Nature of condition: F
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB99304

## Discrepancy

PHL - FLT 1424 - FLIGHT WAS ON APPROACH TO PHL AND AS THE CAPTAIN EXTENDED THE FLAPS/SLATS, THE SLATS OPERATED NORMALLY BUT THE FLAPS WOULD NOT EXTEND.  CAPTAIN PUT THE FIGHT IN A HOLD PATTERN AND WENT THROUGH PROCEDURES.  FLAPS STILL WOULD NOT EXTEND.  CAPTAIN DECLARED AN EMERGENCY AND ADVISED PASSENGERS THE LANDING WOULD BE A LITTLE FASTER THAN NORMAL.  FLIGHT LANDED WITHOUT INCIDENT.  MAINTENANCE REMOVED AND REPLACED THE TRAILING EDGE FLAP POSITION INDICATOR.  OPERATIONAL CHECK NORMAL.  (M)

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