# Incident 20040421014949I: Doug MD9030, Salt Lake City, UT, April 21, 2004

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 21, 2004, 11:33 local time
- Place: Salt Lake City, UT
- Airport: Salt Lake City International
- Damage: Minor damage
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: DALA
- Location: 40.7884° N, 111.9778° W: Placed by OpenAirDocs at SALT LAKE CITY INTL (SLC), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.7884&lon=-111.9778&mi=10
- Aircraft: N915DN, a cancelled registration (https://openairdocs.org/deregistered/N915DN-2022-07-20) (OpenAirDocs)
- Registry model: Mcdonnell Douglas MD-90-30 (registry code 3023690, https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Registry engine: IAE V2500SERIES (registry code 34601, https://openairdocs.org/engine/iae-v2500series) (OpenAirDocs)
- Reported make and model: DOUG MD9030
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20040421014949I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) FLIGHT CREW OF OF AIRCRAFT THOUGHT AIRCRAFT RIGHT HYDRAULIC SYSTEM BECAME DISABLED BECAUSE THE HYDRAULIC PRESSURE AND QUANTITY INDICATORS (EFIS) READ "----". FLIGHT CREW SHUT DOWN RIGHT HYDRAULIC SYSTEM AND DECLARED AN EMERGENCY LANDING TO DESTINATION AIRPORT SLC. THEY PERFORMED MANUAL GEAR EXTENSION AND AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. DELTA AIRLINES MAINTENANCE DISCOVERED THAT THE RIGHT INSTRUMENT TRANSFER CIRCUIT BREAKER WAS "TRIPPED." MAINTENANCE RESET L9 CIRCUIT BREAKER AND PERFORMED RIGHT HYDRAULIC SYSTEM FUNCTIONAL CHECK. SYSTEM OPERATED NORMALLY. NO LEAKS FOUND. MAINTENANCE DISCOVERED THAT THE RIGHT STALL WARNING COMPUTER WOULD NOT TEST. MAINTENANCE REMOVED AND REPLACED RIGHT STALL WARNING COMPUTER AND PERFORMED SYSTEM TEST. OPERATIONAL CHECK OK. INJURY SUMMARY NOT KNOWN BY ASI.

## Other reports on N915DN (3)

Matched to the same aircraft by N-number and date.

- [Incident 20070320003559I](https://openairdocs.org/incident/20070320003559I), Mar 20, 2007: Doug MD9030 (N915DN), Boise, ID. (-23) After a normal landing, taxi, and arrival at gate B22 at the Boise airport (boi), delta airlines flight 1240 was in the process of deplaning passengers…
- [Incident 20060407006629I](https://openairdocs.org/incident/20060407006629I), Apr 7, 2006: Doug MD9030 (N915DN), Boise, ID. (-23) Delta flight 1234, enroute from slc to sea diverted to Boise. Pilot noted a vibration while at FL320. He checked the engine instruments and saw the left…
- [Incident 20001208024379I](https://openairdocs.org/incident/20001208024379I), Dec 8, 2000: Doug MD9030 (N915DN), Santa Ana, CA, Minor damage. (-23) Attached narrative

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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