Service difficulty report · Fastener · Boeing 7378H4

Difficulty date
October 24, 2022
Submitted
November 23, 2022
Operation
Air carrier
Aircraft
N8657B
Make and model
Boeing 7378H4
Aircraft serial
42535
Aircraft time
26,643 hours, 12,489 cycles
Part
Fastener
Condition
Pulled
Location
Nr 1 Inlet
Stage of operation
IN
How discovered
9
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

ON THE #1 ENGINE INLET LIP SKIN EXTERNAL SURFACE; THERE ARE TWO FASTENERS ABOVE THE INBD SEAM THAT ARE PULLING THROUGH. / [01] REMOVED 2 EACH LOOSE FASTENERS AT #1 ENGINE INLET LIP SKIN EXTERNAL SURFACE; ABOVE I/B SEAM PER SRM 51-40-02. REAMED FASTENER HOLES TO FIRST OVERSIZE PER SRM 54-10-01-1A-2 TABLE 101.;[02] INSPECTED WORK PERFORMED IN C/A #!;[03] PERFORMED FASTENER HOLE PROBE INSPECTION PER 737NDT PART 6 51-00-00 PROCEDURE 16. NO DEFECTS NOTED;[04] INSTALLED NEW FASTENERS PER SRM 54-10-01-1A-2 AND SRM 51-40-02;[05] C/W INSPECTION OF STEP #4;[06] REMOVED AND REPLACED FASTENERS PER SRM 54-10-01-1A-2

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