Service difficulty report · Unknown · Boeing 737890

Difficulty date
September 4, 2022
Submitted
September 6, 2022
Operation
Air carrier
Aircraft
N506AS
Make and model
Boeing 737890
Aircraft serial
35690
Aircraft time
51,149 hours, 15,435 cycles
Engine
Cfmint CFM567B27
Part
Unknown
Part number
3400010360
Part serial
DB8288760
Condition
Faulty
Location
#1 Engine
Part time
28,814 hours, 26,941 cycles
Stage of operation
IN
How discovered
U
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

#4 FAN BLADE FAILED ULTRASOUND INSPECTION BLADE #16 REQUIRED CHANGE DUE TO PAIRED MATCH. GROUNDED - YES. REMOVED AND REPLACED #4 AND #16 BLADE REF B737-800 AMM 72-21-02 TEST 7 C/W REF W/O 1918061, T/C 78472010 REACCOMPLISHED ULTRASOUND ON NEW BLADES NO DEFECTS NOTED REF SB CFM56-7B-72-1033-1.