Service difficulty report · Skin · Boeing 7377BD

Difficulty date
January 7, 2021
Submitted
January 28, 2021
Operation
Air carrier
Aircraft
N7724A
Make and model
Boeing 7377BD
Aircraft serial
36725
Aircraft time
36,671 hours, 19,328 cycles
Part
Skin
Condition
Corroded
Location
Fuselage
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

CORROSION EXTERNAL SKIN BS 1016 BETWEEN STR 23R AND STR 24L AT LOWER FUSELAGE. REMOVED CORROSION LOC ON EXTERNAL SKIN BS 1016 BTW STR 23R AND STR 24L AT LOWER FUSELAGE EVALUATED REWORKED AREA AND FOUND WITHIN LIMITS IAW B737-700 P1 AND P3 SRM 53-00-01-1A-1 PAR 4B(2)(B) FIG 103 DETAIL C AND P2 AND P4 SRM 53-00-01-1A-1 PAR 4C(2) FIG 103 DETAIL C MEASURED OF REWORKED AREA P1: L= 97' W=1.960' P2: L=44.5' W=0.623' P3: L=3.800' W=0.393' P4: L=12.500' W=0.400' TOOL USED CALIPER P/N 500-193 S/N 1116081 DUE DATE 24SEP21 AND MRT P1: P1=0.063' P2=0.080' P3=0.071' P4=0.080'.

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