What was found
NR 1 ENG ESN 862676 NR 5 FAN BLADE MISSING CU-NI-IN COATING ON CONVEX SIDE. OUT OF LIMITS, REF MTC 78472010. GROUNDED - YES. REPLACED NR 5 AND NR 17 FAN BLADES AND INSTALLED, PER T/C 78472010.
- Difficulty date
- September 6, 2020
- Submitted
- September 9, 2020
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 18,432 hours, 5,921 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7220 · Turbine Engine Air Inlet Section
- Part
- Blade
- Part number
- 3400010360
- Part serial
- DM120409G
- Condition
- Damaged
- Location
- Nr 1 Eng Fan
- Part time
- 18,442 hours, 5,923 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.