# SDR CALA2022030700594

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2022
- Submitted: March 7, 2022
- Operation: Air carrier
- Aircraft: [N792UA](https://openairdocs.org/aircraft/N792UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26934
- Aircraft time: 101,111 hours, 13,478 cycles
- System (JASC): [5300 · Fuselage Structure (General)](https://openairdocs.org/jasc/5300)
- Part: Skin
- Part number: 148W1300
- Condition: Damaged
- Location: Sta 2174
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022030700594

## Discrepancy

FUSELAGE HAS GROUND DAMAGE AT STA 2174 BETWEEN STR 44R AND 45R. PUNCTURE DAMAGE MEASURES 9.75" LONG AND 4.5" WIDE. LOCKED C/W AVO9521 STEP 1A. OPEN HOLE HFEC INSP REF. NDT PT 6 51-00-02 PROC.1, C/W 1.B. COUNTERSUNK HOLE REF. NDT PT 6 53-00-01, AND C/W STEP 2C. HFEC SURFACE INSP OF THE REPAIR REF. NDT PT6 51-00-01 PROC 2.  NO DAMAGE NOTED. UNLOCKED TO UPDATE. PERFORMED STEPS 1.THRU 2.B, D THRU G. IN REF TO AVO 9521. ADD EMP:U238126 FILLER. .040 , PO 9508411.  REF AVO 9521. B FABRICATION  OF REPAIR PARTS. 1,A THRU 1F. MATERIAL VARIFICATION.    FABRICATE ALL REPAIR PARTS FROM VERIFIED MATERIAL REF AVO 9521B FAB PARTS (1A-1F) PO 7075-T6CLAD. -1 REPAIR DOUBLER .050 ,PO 95084023. -2 REPAIR #''S5058437,9508411,950840232 TRIPLER .050 , PO 95084023 .  -3 REPAIR FILLER .080 , PO 5058437 . - 4 STRUCTURAL FILLER .040, PO 9508411 .  -5 STRUCTURAL ,(CHEMICAL TREATED )ALLODINED AND PRIMED WITH TWO COATS OF BMS 10-79 PRIMER. THE PARTS HAVE BEEN WEIGHED ,TOATAL WEIGHT 4.48 LBS AND GIVEN A COAT OF SEALANT. BMS 5-95. CHANGE IN MATERIAL AND DESIGN. AVO9521 REV B CHANGES FROM A INSTALLED COUNTERSINK WASHERS. OK TO INSTALL REPAIR PARTS TO OK TO INSTALL REPAIRS . REF AVO9521 B . FABRICATION 1A THRU 1G, QC UPDATE. OK TO INSTALL REPAIR PARTS.  QC866 SINGLE -4 -5 STRUCTURAL FILLER TO A SINGLE  -4 FILLER , THERFORE AIRCRAFT. REDUCING FASTENER ROWS. THE - 4 FILLER HAS BEEN FABRICATED FROM .080 7075 -T6. PO 5068437.   ALL REPAIR PARTS FABRICATED VERIFIED INSTALLATION OF REPAIR PARTS. AWAITING FINAL ECRA.

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