Service difficulty report · Fitting · Boeing 737490

Difficulty date
December 4, 2013
Submitted
December 6, 2013
Operation
Air carrier
Aircraft
N788AS
Make and model
Boeing 737490
Aircraft serial
28885
Aircraft time
52,800 hours, 29,567 cycles
Part
Fitting
Part number
65C103004
Condition
Corroded
Location
Nlg
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

NLG RETRACT ACTUATOR UPPER ATTACH BEARING IS STIFF & RUSTED. ACFT GROUNDED. REMOVED BEARING FROM NLG RETRACT ACTUATOR UPPER FITTING. FOUND PITTING IN BORE OF FITTING. FITTING BORE AT MAXIMUM DESIGN DIMENSION, REF DWG 65C10300. REMOVED FITTING REF SRM 51-40-02. CLEANED AND REFINISHED FITTING SUPPORT STRUCTURE MATING SURFACE REF AMM 51-21. DRILLED 10EA HOLES IN VERTICAL LEG OF NEW FITTING .247 DIA. REF SRM 51-40-02. DRILLED 14 EA HOLES IN HORIZONTAL LEG OF FITTING AND TOUCHED UP COUNTERBORES IAW DWG. 65C10300. INSTALLED NEW FITTING AND FASTENERS WET WITH SEALANT IAW SRM 51-40-02.