What was found
EICAS -HYD QTY LOW 1- DISPLAYED DURING CRUISE. REPLACED LEAKING NR 1 AIR DRIVEN HYDRAULIC PUMP.
- Difficulty date
- July 12, 2026
- Submitted
- July 16, 2026
- Operation
- Air carrier
- Aircraft
- N729CA
- Make and model
- Boeing 747412
- Aircraft serial
- 25068
- Aircraft time
- 101,663 hours, 17,490 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Part number
- 4205401
- Part serial
- 1418770
- Condition
- Leaking
- Location
- Hyd Adp
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.