What was found
WHILE ACCOMPLISHING T/C 78472010 FOUND CU-NI-IN COATING MISSING OUT OF LIMITS. ON ENG #2 BLADES #2, #5, #14, #20. GROUNDED - YES. REMOVED AND REPLACED FAN BLADES #2, #5, #14 AND #20 REF T/C 78472010 REF L/P 60242310 FOR BLADE #20.
- Difficulty date
- December 3, 2021
- Submitted
- December 7, 2021
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 32,116 hours, 10,335 cycles
- System (JASC)
- 7220 · Turbine Engine Air Inlet Section
- Part
- Blade
- Part number
- 3400010360
- Part serial
- DM067394B
- Condition
- Damaged
- Location
- #2 Engine
- Part time
- 32,116 hours, 10,335 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.