SDR ASAA2021010933854

Service difficulty report · Spacer · Boeing 737990ER

Difficulty date: January 9, 2021
Submitted: January 12, 2021
Operation: Air carrier
Aircraft: N434AS
Make and model: Boeing 737990ER
Aircraft serial: 61620
Aircraft time: 18,147 hours, 5,729 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Spacer
Part number: 3401169310SD
Condition: Debonded
Location: Nr 2 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.

What was found

WHILE ACCOMPLISHING T/C 78472010 NR 2 ENGINE FOUND, 9 FAN BLADE SPACERS WITH ELASTOMERIC MATERIAL DISBONDING, ALL 24 FAN BLADE PLATFORMS, HAS WEAR PATTERN FROM CONTACT WITH HUB. GROUNDED-YES. REMOVED AND REPLACED 9 EA FAN BLADE SPACERS, ON NR 2 ENGINE, AND 24 EA FAN BLADE PLATFORMS, REF T/C 78482010.