# SDR DXTA2026081309243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2026
- Submitted: August 13, 2026
- Operation: Air carrier
- Aircraft: [N919QS](https://openairdocs.org/aircraft/N919QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0341
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Transfer Sys
- Condition: Malfunctioned
- Location: Fuel Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026081309243

## Discrepancy

ON RAMP,  FUEL 300LBS, LT TANK HEAVY.  CROSSFEED TO  LT TANK UTILIZED ON TAXI OUT.  FUEL IN NORMAL POSITION ON TAKEOFF.   220 LBS HEAVY ON THE LT TANK.  CLIMBING OUT, LT CROSSFEED SELECTED & FUEL USED DOWN TO BALANCED.  CROSSFEED SELECTED OFF. CLIMBING UP TO FL340.  LEVEL AT FL340 NOTICED  FUEL BECAME INBALANCED IN OPPOSITE DIRECTION  OF 120 LBS HEAVIER ON RT SIDE.  CROSSFEED TO RT SELECTED.  INBALANCE INCREASED TO 160, THEN 200 LBS. & LT TANK BEGAN TO DECREASE 20LBS EVERY FEW MINUTES.  ATC ADVISED OF ISSUE.  DIVERTED TO PBI (DJT) & BEGAN A DESCENT DOWN TO FL200.  AFTER A WHILE, FUEL BECAME BALANCED AGAIN, CROSSFEED  TURNED OFF & CONTINUED TO PBI.  SINCE FUEL SYS NOW OPS NORMAL, ADVISED ATC,  WOULD NEED TO BURN 700 LBS TO GET BELOW LANDING WEIGHT.  HELD FOR 3 TURNS WITH FLAPS 1 & GEAR DOWN.  ONCE UNDER LANDING WEIGHT, LANDED AT PBI (DJT) UNEVENTFULLY.    REMOVED, CLEAN & RE-RACK BOTH FUEL CONTROL PCBS NZ107 AND NZ207.  FOLLOWED UP WITH ENG RUNS & ATTEMPTED TO SIMULATE CREW'S WRITE UP.  PERFORMED FUEL CROSS FEED VALVE OPS CHK,  CHKD SUCCESSFULLY,  NO ISSUES ENCOUNTERED, KEPT ENGS RUNNING & WAITED 10 MINS WITH CROSSFEED OFF & WAS NOT ABLE TO ENCOUNTER ANY ISSUES OR DEFECTS WITH THE FUEL SYS (LT 3580 & RT 3580). POWERED DOWN & LET ACFT TO SIT FOR 4 HRS, CHKD TO SEE IF FUEL MIGRATED TO EITHER TANK.  RAN ENGS & PERFORMED ANOTHER SUCCESSFUL FUEL CROSSFEED VALVE OPS CHK, POWERED DOWN & LET SIT FOR ANOTHER 4 HRS & POWERED UP TO FIND FUEL STILL DID NOT MIGRATE. FUEL SYS NOW CONSIDERED FULLY FUNCTIONAL & OPS. WORKED IAW AMM 28-20-00.

---
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.