# SDR QXEA9801474

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N491US
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11156
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Condition: Cracked
- Location: Lt Horiz Stab
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA9801474

## Discrepancy

LEFT-HAND SIDE HORIZONTAL STAB FRONT SIDE OF AFT SPAR STIFFENER IS CRACKED INBOARD OF RIB 1265.  REPAIRED IAW FOKKER SRM 55-01-01 PAGE 6 PARAGRAPH 5B.

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