# SDR 97ZZZX1781

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N921VV
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47284
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Part number: 591141253N
- Condition: Corroded
- Location: Bs 400
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX1781

## Discrepancy

DURING A SCHEDULED INSPECTION AT AERO CORP, FOUND LONGERON 29L CORRODED BETWEEN STA 389 - STA 408 AROUND NUTPLATES FOR RADIO ALTIMETER NR 1.  REMOVED LONGERON 29L AND 30 FOR ACCESS TO CORROSION.  UPON REMOVAL OF LONGERON 30, A 5 INCH CRACK WAS FOUND IN THE FACTORY SPLICE.  FABBED AND INSTALLED LONGERON 30, LONGERON SPLICES 29L AND 30, AND INSTALLED NEW ALTIMETER DOUBLER IAW DC9 SRM'S 51-10-3, 53-01 FIG 1, AND DOUGLAS DWG NR 5911412.

---
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.