What was found
REF ASA TASK CARD 78273000. FOUND FAULT CODE 75-30412 (HPTACC POSITION SIGNALS DISAGREE) ON ENG #2. GROUNDED - YES. REMOVED AND REPLACED #2 ENG HPTACC VALVE REF B737-900 AMM 75-21-01-400-801-F00. ( REF ASA LP 60485777)
- Difficulty date
- December 6, 2022
- Submitted
- January 4, 2023
- Operation
- Air carrier
- Aircraft
- N472AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 28,443 hours, 8,795 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7500 · Engine Bleed Air System
- Part
- Valve
- Part number
- 32911867
- Part serial
- GRTV5147
- Condition
- Faulted
- Location
- Nr 2 Engine
- Part time
- 792 hours, 247 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.