# SDR AALA202605013131

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2026
- Submitted: May 1, 2026
- Operation: Air carrier
- Aircraft: [N970AN](https://openairdocs.org/aircraft/N970AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30096
- Aircraft time: 69,380 hours, 29,628 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Sensor
- Condition: Faulty
- Location: Rt Flap Sys
- Stage of operation: AP
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202605013131

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING APPROACH WHEN FLAPS 1 SELECTEDNO RESPONSE FROM FLAPS. AIRCRAFT EMERGENCY LANDED SAFELY AT CLT. PERFORMED FIM TASK 27-59-00-810-804 TE FLAP SUPPORT NO. 4 SKEW PROBLEM FOR MAINTENANCE MESSAGE 27-53252 FLAP 4 SKEW. MEASURED THE DISTANCE FROM THE BALLSCREW NUT TO THE YOKE ON TRANSMISSIONS NUMBER 4 AND NUMBER. 5. BOTH MEASUREMENTS MATCHED. NO DAMAGE NOTED ON BALLSCREW AND GIMBAL, TRANSMISSION, CARRIAGE AND ROLLERS OR FLAP TRACK. REPLACED INBOARD FLAP INBOARD SKEW SENSOR NUMBER 4. PER AMM 27-59-01. OPS CHKS GOOD.

---
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.