Service difficulty report · Skin · Boeing 73779P

Difficulty date
October 4, 2023
Submitted
December 5, 2023
Operation
Air carrier
Aircraft
N7868K
Make and model
Boeing 73779P
Aircraft serial
29364
Aircraft time
51,575 hours, 34,657 cycles
Part
Skin
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
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 FOUND AT RT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90 ; 16.5' FROM FRONT SPAR; I/B ROW. CRACK LENGTH 1.281' CRACK FOUND AT RT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90 16.5' FROM FRONT SPAR I/B ROW. CRACK LENGTH 1'<[01] PERFORMED SME INSPECTION FOR WORKMANSHIP AND PAPERWORK AUDIT.;[02] INSTALLED DOUBLER AND FILLER REPAIR WITH 100% SQUEEZE OUT AS PER REF SRM 55-10-01-2R-11 REPAIR 11. SEALANT USED BMS 5-95 TYPE 1 PS 870 C80 MIX TIME 9:15PM 10/16/2023 PER REF SOPM 20-50-19; REPAIR 11 IS A CATEGORY B REPAIR; INSPECTION THRESHOLDS AT 56;000 TOTAL FLIGHT CYCLES.;[03] RII....VERIFIED FINAL CORRECTIVE ACTION.;[04] CORRECTION STEP 2: INSTALLED DOUBLER AND FILLER REPAIR WITH 100% SQUEEZE OUT AS PER REF SRM 55-10-01-2R-11 REPAIR 11. SEALANT USED BMS 5-95 TYPE 1 PS 870 C80 MIX TIME 9:15PM 10/16/2023 PER REF SOPM 20-50-19; REPAIR 11 IS A CATEGORY B REPAIR; INSPECTION THRESHOLDS AT 56;000 TOTAL FLIGHT CYCLES. AND INTERVAL INSPECTION AT 9;000FLIGHT CYCLES;[05] RII....VERIFIED FINAL CORRECTIVE ACTION STEP 4.;[06] ITEM AUDIT COMPLETED.

More about the Boeing 737-79P