Service difficulty report · Skin · Boeing 737724

Difficulty date
May 31, 2021
Submitted
May 31, 2021
Operation
Air carrier
Aircraft
N14731
Make and model
Boeing 737724
Aircraft serial
28799
Aircraft time
69,177 hours, 24,369 cycles
Part
Skin
Part number
143A3111
Condition
Damaged
Location
Bs 462
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

LIGHTNING STRIKE DAMAGE FUSELAGE CROWN STA462 S-1 (MARKED 18) STRIKE DAMAGE OCCURED ON SKIN DIRECTLY OVER STRINGER. DAMAGE BEYOND LIMITS OF BLEND OUT AS PER SRM 53-00-01-2R-38 PAR 4D. CUT OUT DAMAGED AREA AS PER SRM 53-00-01-2R-35 REPAIR 35 HFEC INSPECTION OF CUT OUT REQD REFER TO 737 NDT PART6 51-00-00 PROCEDURE 4,16,AND 23 AS PER SRM 53-00-012R-35 REPAIR 35 PARA 4 STEPS F THRU K PERFORMED HFEC ON CUT OUT PER NDT PART 6 51-00-00 PROCEDURE 23 NO CRACKS NOTED INDICATIONS (MARKED) PART 6 51-00-00 PROCEDURE 16 AND FOUND 3 HOLES SHOWING CRACK PERFORMED ROTARY SCAN ON FASTNER HOLES OVER STRINGER PER NDT OPENED MARKED HOLES TO .193 IAW B737 SRM 53-00-01-2R-35 ADD EMP:U334423 51-00-00 PROCEDURE 16 AND FOUND 3 HOLES SHOWING CRACK INDICATIONS PERFORMED ROTARY SCAN ON 3 FASTNER HOLES .193 PER NDT PART 6 MATERIAL ID FOR DOUBLER PO# 7247827 2024T3 .040", TRIPLER PO# SHIM PO# 04772343 .050" 2024T3 AS PER SRM 53-00-01 REPAIR 35 0497798 .063" 2024T3, AND TEARSTRAP INTERNAL DOUBLER , TAPERED TABLE 201 CLEANED COUNTERSINKS AND PRODUCTION HOLES AS PER SRM 51-10-02 PERFORMED COUNTERSUNK HOLE INSPECTION PER NDT PART 6, 53-30-00 PROCEDURE 3 AND ROTO SCAN ALUM HOLE NDT PART 6,51-00-00 FIG16 ON THREE MARKED HOLES, NO DEFECTS NOTED. MATERIAL ID FOR REPAIR ALL PO NUMBERS DO NOT SHOW VALID. AS PER SRM 53-00-01-2R-35 REPAIR 35 TABLE 201 MATERIAL ID FOR -1 0.063" P/O 0497398, -3 FILLER 2024-T3 0.080" P/O 9508406, -4 DOUBLER IS 2024-T3 0.040" P/O 7247827, -2 TRIPPLER 2024-T3 TEARSTRAP 2024-T3 0.050" P/