# SDR UIEA2021061101315

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2021
- Submitted: June 11, 2021
- Operation: Air carrier
- Aircraft: [N1093A](https://openairdocs.org/aircraft/N1093A), registered now
- Make and model: Boeing 767-36N
- Registry model: [Boeing 767-36N](https://openairdocs.org/model/boeing-767-36n) (OpenAirDocs)
- Aircraft serial: 30111
- Aircraft time: 84,142 hours, 12,557 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Line
- Condition: Out Of Position
- Location: Pressure Hose
- Stage of operation: TX
- 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/UIEA2021061101315

## Discrepancy

LEFT ENGINE BLEED OFF MSG AFTER START. COMPLETED QRH MSG REMAINS.(<P>PERFORMED AIR SUPPLY BITE TEST IAW 767 AMM 36-23-00, SUSPECT BAD PRV. REMOVED & REPLACED PRV IAW 767 AMM 36-11-18. PERFORMED ENGINE RUNS IAW 767 AMM 71-00-00, OPS CHECK FAILED, LEFT ENGINE NO DUCT PRESSURE.</P><P>LP 1466400, ITEM M4: REMOVED AND REPLACED PRV CONTROLLER IAW AMM 36-11-19, S/N OFF: 2017070012, P/N OFF: 792755-15. OPS CHECK FAILED.</P><P>LP 1466401, ITEM M7: REF B767 WDM 36-11-61 FOUND OPEN WIRE BETWEEN CONNECTOR P4156P AND PRV VVALVE V325, PIN 7-TERMINAL 3. REPLACED WIRE BUNDLE FROM CONNECTOR D4156P TO LEFT ENG PRV V325, IAW B767 SWPM 20-10-11. LEFT ENGINE BLEED OPS CHECK NML, WIRES CHK OK.</P><P>LP 1466402, ITEM M10: REMOVED AND REINSTALLED PRV ACTUATOR SUPPLY PRESSURE HOSE AND PRECOOLER REGULATED PRESSURE LINE IN CORRECT POSITION. IAW AMM 20-11-00, OPS CHECK & LEAK CHECK GOOD AT THIS TIME IAW BAMM 36-11-15. BAMM 36-11-18 AND BAMM 36-11-19</P>)

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