SDR ASAA2022122841298

Service difficulty report · Hook · Boeing 737890

Difficulty date: December 28, 2022
Submitted: December 29, 2022
Operation: Air carrier
Aircraft: N535AS
Make and model: Boeing 737890
Aircraft serial: 35200
Aircraft time: 43,057 hours, 12,345 cycles
Engine: Cfmint CFM567B273
Engine time: 7,888 hours, 2,180 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Hook
Condition: Worn
Location: Nr 2 Engine
Stage of operation: IN
How discovered: B
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 BORO ASA TC SBCFM56-7B-72-1074-1 (VSV SYSTEM FOR ROTOR TO STATOR CONTACT) FOUND J-HOOK COMPLETELY WORN THROUGH AND OVERLAPPING AT STAGE 3 DUE TO CONTACT. ALSO MULTIPLE DAMAGES TO 4 STAGE HPC ROTOR BLADES AND A MISSING LIBERATED RADIAL SLAB RETENTION VSV PIN. REPORT AND ADDITIONAL PICTURES AND VIDEO IN INSPECTION SERVER FOR #2 ENG ESN 802158. GROUNDED - YES. REMOVED #2 ENGINE (ESN 802158). REPLACED WITH ESN 963476. TRANSFERRED TO ASA SHOP W/O 1936499.