# SDR DALA2024022302555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2024
- Submitted: February 23, 2024
- Operation: Air carrier
- Aircraft: N535US
- Make and model: Boeing 757251
- Aircraft serial: 26482
- Aircraft time: 89,432 hours, 29,139 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: UNKNOWN
- Condition: Mechanic Error
- Location: Bs 620-640 S2l/R
- Stage of operation: IN
- How discovered: V
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024022302555

## Discrepancy

SHIP 5635 WHILE PERFORMING INSPECTIONS PER WC 2330-01322-03I, ET-GPS ANTENNA, B757-200  INSPECT, SECTION 03I, NINE (9) PLUG LOCATIONS COMMON TO THE SKIN ONLY WERE FOUND BETWEEN STA 620  640 AND STRINGERS 2R  2L. THESE LOCATIONS ARE ADJACENT TO THE FASTENERS ATTACHING THE -505 DOUBLER INSTALLED PER DRAWING 3104231902 GPS ANTENNA RELOCATION INSTL WITH A MINIMUM CENTER TO CENTER SPACING OF 0.300 AS SHOWN IN FIGURES 1.1  1.6. DURING REMOVAL OF THE DOUBLER 8 HOLES WERE MISDRILLED REQUIRING FURTHER OVERSIZE (FIGURE 1-7). IN ADDITION, AN AREA OF THE SKIN WAS FOUND TO BE OIL-CANNING JUST INBOARD OF S-1 AND JUST AFT OF FS620 AND WAS ALSO REMOVED. CORRECTIVE ACTION: REF ERA 605920-14. (0202827)

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