What was found
DURING PDC DURING AROUND, FOUND #2 ENG TBV DRAIN LINE LEAK WITH 1 DROP PER MINUTE. GROUNDED - YES. REMOVED AND REPLACED #2 TBV PER B737-900 AMM 75-23-01-400-801-F00. PERFORMED TEST LISTED. NO LEAKS FOUND. NO DEFECTS NOTED.
- Difficulty date
- October 29, 2019
- Submitted
- November 5, 2019
- Operation
- Air carrier
- Aircraft
- N448AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36356
- Aircraft time
- 14,331 hours, 4,628 cycles
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Bleed Valve
- Part number
- 1821M60P04
- Part serial
- GRT18264
- Condition
- Leaking
- Location
- Nr 2 Engine
- Part time
- 14,374 hours, 4,639 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.