# SDR FDEA202506191002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2025
- Submitted: June 19, 2025
- Operation: Air carrier
- Aircraft: [N521FE](https://openairdocs.org/aircraft/N521FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48478
- Aircraft time: 91,548 hours, 17,992 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Part number: AFA77781
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202506191002

## Discrepancy

CENTER CARGO - RIGHT HAND STATION 1621 LONGERON - 39 RIGHT LONGERON FOUND   CORROSION. CORROSION ON LONGERON AT CENTER CARGO STATION 1621, LONGERON -39 RIGHT   EVALUATION AND FOUND EXFOLIATED AND OUT OF LIMITS PER MD-11 SRM 53-00-00-2R FIGURE   205. REPAIR GENERAL. REPAIR CARRIED OUT WITH 02EA LONGERON REPAIR SECTIONS BETWEEN   STATION 5-123 TO STATION 1631 AND BETWEEN STATION 1631 TO STATION 1675 LONGERON - 39   RIGHT AND 01 EA REPAIR SPLICE FITTING PER MD-11 SRM 53-00-05-2R FIGURE 201 REPAIR 1.   REPAIR CLASSIFIED MAJOR PER GMM 6-2-100. REFER TO SNRM NO. N00541 FOR WORK DETAILS.

---
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.