# SDR CALA2026010212605

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2025
- Submitted: January 2, 2026
- Operation: Air carrier
- Aircraft: [N74007](https://openairdocs.org/aircraft/N74007), registered now
- Make and model: Boeing 777224
- Aircraft serial: 29477
- Aircraft time: 121,963 hours, 12,531 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Damaged
- Location: Zone 100
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026010212605

## Discrepancy

LIGHTNING STRIKE DAMAGE AT STA 845 AND BETWEEN S-27 - S-28 BETWEEN S-28 AND S-29 ACPD CONDUCTIVITY CHECK ON HEAT DAMAGED AREA. FOUND DAMAGE AREA AVERAGE READING OF 45. READING OF 38 AT POINT OF IMPACT. REMOVED THE EXISTING FASTNERS AND CUT OUT DAMAGED PART OF SKIN IAW SRM 53-00-01-2R-4. ACP HFEC 777 NTM PART 6 51-00-01 PROCEDURE 2. NO CRACKS.  ACP HFEC ROTO PBOBE 777 NTM PART 6 51-00-02 PROCEDURE 2. NO CRACKS AT HOLES. MANIFACTURED FILLER. INSTALLED FILLER WASHERS TO THE INITIAL FASTENER LOCATIONS IN REF TO SRM 53-00-01-2R-4 REPAIR 4.  INSPECTED REPAIR REF SRM 53-00-01-2R-4. 100% GOOD. COMPLETED INSTALLING REPAIR DOUBLER IAW SRM 53-00-01-2R-4 REPAIR 4. APPLIED FILLET SEAL, PRIMED & PAINTED SURFACE. APPLIED CORROSION INHIBITING COMPOUND REF SRM 53-00-01-2R-4 REPAIR 4.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.