# SDR USAA20101019SB167

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2010
- Submitted: October 19, 2010
- Operation: Air carrier
- Aircraft: [N432US](https://openairdocs.org/aircraft/N432US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24554
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Relay
- Condition: Faulty
- Location: E&E Bay
- Stage of operation: AP
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA20101019SB167

## Discrepancy

CLT - ON APPROACH INTO CLT, CREW REPORTED THE FLAPS SPLIT BETWEEN 15 - 25.  NO ROLL WAS NOTICED, BUT FLAP GAUGE WAS SPLIT BETWEEN 15 - 25. DURING GO-AROUND AND RESOLVING CHECKLIST, FLAP GAUGE FLICKERED AND CORRECTED ITSELF.  FLIGHT MADE A NORMAL LANDING.  MAINTENANCE ACCOMPLISHED FLAP 25 UNIT X-DIMENSION CHECK.  LEFT AND RIGHT WITHIN LIMITS PER MM 27-58-12.  ACCOMPLISHED DFCS BITE.  LEFT AND RIGHT FLAP POSITIONS WITHIN VALUES ON MCDU PER TSM 27-58-01.  REMOVED AND REPLACED FLAP ASYMMETRY SHUT OFF RELAY R123.  ACCOMPLISHED TRAILING EDGE FLAP POSITION INDICATOR SYSTEM TEST PER MM 27-58-01.  CHECKS OK.  AIRCRAFT OK FOR SERVICE.

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