# SDR CALA2026042315652

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2026
- Submitted: April 23, 2026
- Operation: Air carrier
- Aircraft: [N643UA](https://openairdocs.org/aircraft/N643UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25093
- Aircraft time: 136,748 hours, 21,021 cycles
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Tank
- Condition: Leaking
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026042315652

## Discrepancy

FOUND FUEL SEEPING IN LH AIR CONDITIONING BAY, PANEL 193 ABOVE PLENUM. REMOVED SEALANT AND APPLED B 1/2 SEALANT ON EXTERIOR PORTION OF LEAK AT 20:10 REF AMM 28-11-00 COMPLETED BLOWBACK LEAK DETECTION PROCEDURE AND FOUND LEAK IN SEALANT AT 3RD STRINGER IN THE 3RD BAY OF THE CENTER FUEL TANK REF AMM 28-11-00-796-111. SCRAPED OLD SEALANT ON STRINGER AND APPLIED B 1/2 SEALANT AT 20:30 IAW AMM 28-11-00-308-013   LEAK CHECKED GOOD IAW MM 28-11-00.

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