# SDR 2003FA0001081

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2003
- Submitted: October 22, 2003
- Operation: General aviation
- Aircraft: [N5852D](https://openairdocs.org/aircraft/N5852D), registered now
- Make and model: Piper PA-22-150
- Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (OpenAirDocs)
- Aircraft serial: 224531
- Engine: Lyc O320*
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Cap
- Part number: U60750002
- Condition: Inadequate
- Location: Fuel Cell
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0001081

## Discrepancy

FUEL CAP DID NOT VENT.  THE FUEL CAP WAS RETURNED TO MFG AND THEY REPORTED THE CAP TO BE VENTING PROPERLY.  MFG REPLACED THE CAP AND THE REPLACEMENT REFUSED TO VENT.  ON THE GROUND THERE APPEARS TO BE ADEQUATE VENTING CLEARANCE BETWEEN THE FILLER NECK WASHER AND THE CAP VENT HOLES.  HOWEVER, IN FLIGHT SOMETHING MOVED AND THE FILLER NECK GASKET SEALED THE VENT HOLES IN THE FUEL CAP.  IN SOME INSTANCES THE FILLER NECK DOES NOT EXTEND HIGH ENOUGH ABOVE THE TANK AND FILLER NECK WASHER TO PREVENT THIS SEALING EFFECT.  SUGGEST MODIFICATION OF THE CAP VENT HOLES TO PREVENT THIS TYPE OF BLOCKAGE.

---
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.