Service difficulty report · Isolation Valve · Boeing 767306
FAA SDR system
- Difficulty date
- August 14, 2019
- Submitted
- August 15, 2019
- Operation
- Air carrier
- Make and model
- Boeing 767306
- Aircraft serial
- 28098
- Aircraft time
- 79,597 hours, 17,009 cycles
- Engine
- Ge CF680C2B6F
- Part
- Isolation Valve
- Part number
- 2780539103
- Part serial
- TLS25628
- Condition
- Malfunctioned
- Location
- Nr 1 Engine
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
N1 ENGINE FAILS TO SPOOL ABOVE 20% N2. REMOVED AND REPLACE RT ISOLATION VALVE IAW AMM 36-11-04. ACCOMPLISHED SATISFACTORY OPERATIONAL AND LEAK TEST IAW AMM 71-00-00, 36-11-04. NR 1 ENGINE SPOOL UP WAS 26% N2 IAW AMM 71-00-00. NO DEFECTS NOTED.