# SDR UIEA2016031100159

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2016
- Submitted: March 11, 2016
- Operation: Air carrier
- Aircraft: [N640GT](https://openairdocs.org/aircraft/N640GT), registered now
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 25221
- Aircraft time: 79,693 hours, 16,845 cycles
- System (JASC): [2550 · Cargo Compartments](https://openairdocs.org/jasc/2550)
- Part: Drain
- Condition: Dirty
- Location: Fuselage
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2016031100159

## Discrepancy

FL 410 LOUD ESCAPING AIR HISS AT 21 - 22L FLOOR LEVEL PALPABLE AIR FLOW.  ICE ACCUMULATING ON SKIN, SUSPECT A PRESS LEAK.  EMER ESCAPE HATCHES & ECS DUCTING ARE NOT SOURCES.  GROUND PRESS ACFT IAW AMM 21-31-00, FOUND EXTERNAL DRAIN, SEE 51-41-00 209 LEAKING.  CLEANED DRAIN IAW AMM 51-41-00-102-001.  LEAK & LOUD HISS STOPPED.

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