What was found
#1 ENG FAN BLADE PLATFORMS NUMBERS 3, 8, 14, 15, 17, 22, & 24 HAD CORROSION. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENGINE FAN BLADE PLATFORMS.
- Difficulty date
- August 5, 2020
- Submitted
- August 6, 2020
- Operation
- Air carrier
- Aircraft
- N491AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44109
- Aircraft time
- 18,250 hours, 5,849 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7220 · Turbine Engine Air Inlet Section
- Part
- Platform
- Part number
- 3400018170
- Condition
- Corroded
- Location
- Nr 1 Eng Fan
- 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.