# SDR SWAA2018080624019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2018
- Submitted: August 6, 2018
- Operation: Air carrier
- Aircraft: [N783SW](https://openairdocs.org/aircraft/N783SW), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29809
- Aircraft time: 62,803 hours, 36,893 cycles
- System (JASC): [2751 · Trailing Flap Position Indicating System](https://openairdocs.org/jasc/2751)
- Part: Transmitter
- Part number: 18173810
- Part serial: 0895A
- Condition: Faulty
- Location: Te Flap
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2018080624019

## Discrepancy

AIR TURNBACK/DECLARED EMERGENCY, STICK SHAKER ACTIVATED DURING TAKEOFF ROTATION AIRBORNE AT VR-FLAPS 5Ï¿½ STALL WARNING LOGIC EXCESSIVELY HIGH THROUGHOUT FLIGHT.  DURING APPROACH A FLAPS 40Ï¿½ YELLOW STALL STICK SHAKER BAND WAS 1 KNOT BELOW CALCULATED V REF SPEED LANDING WEIGHT 128.0 PER INDICATIONS.  R&R RT FLAP POSITION TRANSMITTER PER AMM.

---
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.