# SDR AALA2018121849004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2018
- Submitted: December 18, 2018
- Operation: Air carrier
- Aircraft: [N9629H](https://openairdocs.org/aircraft/N9629H), registered now
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53599
- Aircraft time: 55,549 hours, 27,830 cycles
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Valve
- Condition: Defective
- Location: Fuel System
- Stage of operation: LD
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2018121849004

## Discrepancy

DURING CLIMB OUT,  CENTER FUEL PRESSURE LOW ILLUMINATE WITH APROXIMATELLY 2000 LBS, IN THE CENTER TANK. WHILE EXECUTING THE QHR PROCEDURE THE CENTER FUEL QUANTITY INITIALLY INCREASED TO 2500 LBS , AT THE POINT THE LOW PRESS LIGHT EXTINGUISHED AND FUEL RETURNED NORMALLY FOR SEVERAL MINUTES. AT THAT POINT THE LIGHT REILLUMINATED. AN EMERGENCY WAS DECLAED AND THE FLIGHT AIR INTERRUPTED BACK TO ORD FOR LANDING WITH NO FURDER INCIDENT. NOTE: WHILE CENTER FUEL QUANTITY WAS INCREASING BOTH MAIN TANK QUANTITIES WERE DECREASING. REPLACED CENTER TANK EXTRACTOR CHECK VALVE PER AMM 28-20-26. NO DISCREPANCIES NOTED. AFTER CLOSE CLEARANCE, PANEL 1436C SEALED AT 2230. OK FOR SERVICE.  THE AIRCRAFT WAS GROUNDED.

---
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.