# SDR DALA2016020800917

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2016
- Submitted: February 8, 2016
- Operation: Air carrier
- Aircraft: [N990DL](https://openairdocs.org/aircraft/N990DL), registered now
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53342
- Aircraft time: 63,496 hours, 45,933 cycles
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Former
- Condition: Cracked
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2016020800917

## Discrepancy

CRACKED FORMERS ON BS ZFS=23 LT SIDE AND BS ZFS=23 AND 36 AT VERTICAL STABILIZER LEADING EDGE INTERNAL STRUCTURE. CRACKED FORMERS WERE REPAIRED IAW DC9/MD80 SRM 55-02D, FIG 27, PERFORM INSPECT FOR CRACKS ON L/E SKIN EVERY C-CHECK IAW SRM 55-02D, FIG 27 PAG 113, NOTE 3.

---
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.