Service difficulty report · Skin · Boeing 737824

Difficulty date
August 6, 2021
Submitted
August 9, 2021
Operation
Air carrier
Aircraft
N78511
Make and model
Boeing 737824
Aircraft serial
33459
Aircraft time
43,619 hours, 15,059 cycles
Part
Skin
Part number
182A4001
Condition
Cracked
Location
Horizontal Stab
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

CRACK ON LOWER INSPAR SKIN ON RIGHT HORIZONTAL STAB STA.147.9 " 27.5" FROM FORWARD SPAR AND MEASURING 1.5" IN LENGTH . LOG PAGE FOR DIP ENTRY ONLY, SEE FLEET CYCLE L/P 9780721 FOR REP INST PER SRM 55-10-01-2R-11. NEED TO PERFORM INSP AS GIVEN IN TABLE 204 & FIG 206 REPAIR 11 AT INITIAL THRESHOLD OF 56000 ADD EMP:U243055 TOTAL FLIGHT CYCLES AND REPEAT INSPECTIONS AT 9000 FLT CYCLES THEREAFTER. INSP METHODS ARE DETAILED VISUAL INSP AND EXTERNAL LFEC. APPROVED TO PERFORM INSP AS GIVEN IN TABLE 204 & FIG 206 REPAIR 11 AT INITIAL THRESHOLD OF 56000 MORE TOTAL FLIGHT CYCLES AND REPEAT INSPECTIONS AT 9000 FLT CYCLES THEREAFTER. INSP METHODS ARE DETAILED VISUAL INSP AND EXTERNAL LFEC IN REFERENCE WITH SRM 55-10-01-2R-11 REPAIR 11 TOMC-APPROVAL FROM SC1ELBYC COMMENT QC REVIEWED QC REVIEWED INSPECTIONS CREATED BY AUTODIP PENDING AIRCRAFT RECORDS AUDIT & UPDATE. DURING RSC ON WING SURVEY PER EA 5100-02345 REV E, DETERMINED THE CORRECT LOCATION OF REPAIR INSTALLATION IS AT STA 125 TO STA 143 APPROX 5" AFT OF FWD SPAR. DOUBLER IS 16"X19"