# Incident 20000427017119I: Doug DC862, Denver, CO, April 27, 2000

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 27, 2000, 21:45 local time
- Place: Denver, CO
- Airport: Denver International
- Damage: Minor damage
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: RRXA
- Location: 39.8493° N, 104.6998° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.8493&lon=-104.6998&mi=10
- Aircraft: N990CF, a cancelled registration (https://openairdocs.org/deregistered/N990CF-2002-05-15) (OpenAirDocs)
- Registry model: Douglas DC-8-62 (registry code 3021970, https://openairdocs.org/model/douglas-dc-8-62) (OpenAirDocs)
- Registry engine: Pratt & Whitney JT3D-3&3B (registry code 52039, https://openairdocs.org/engine/pratt-whitney-jt3d-3-3b) (OpenAirDocs)
- Reported make and model: DOUG DC862
- People aboard: 5
- Fatal injuries: 0
- Pilot flight hours: 11,000 total, 5,100 in this make and model, 165 in the last 90 days
- NTSB investigation: [NTSB DEN00FA078](https://openairdocs.org/ntsb/DEN00FA078) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20000427017119I

## Narrative

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

(-23)ON APRIL 28, 2000, EMERY FLIGHT 025, ENROUTE FORM SEA TO DAY WAS OVER EASTERN MONTANA. AT APPROXIAMTELY 0330Z IN CRUISE AT FL370, THE CREW HEARD A LOUD BANG, THE A/C SHOOK AND THE A/C BEGAN TO LOSE PRESSURIZATION.  THE CREW DONNED THE 02 MASKS AND COMPLETED THE APPROPRIATE CHECKLIST AND INITIATED DESCENT TO 14,000 FT.  ENGINE INSTRUMENTS INDICATED A FAILURE OF #2 ENGINE.  THE CREW SECURED THE #2 ENGINE.  CREW DIVERTED TO DEN FOR MAINTENANCE ASSISTANCE.  DEN WAS DEEMED THE NEAREST SUITABLE AIRPORT BY VIRTUE OF SEVERAL CONSIDERATION.  AFTER LANDING, AN INSPECTION OF THE AIRCRAFT WAS PERFORMED.  THE HIGH PRESSURE RELIEF VALVE AFT CLAMP HAD UNCOUPLED AND THEREFORE THE HIGH PRESSURE ENGINE BLEED AIR ON #2 ENGINE FORCED THE UPPER COWLING HINGES TO RUPURE.  THE ENGINE COWLING PENETRATED THE LEFT FUSELAGE, AMKING A FOUR-INCH DIAMETER HOLE.  THE COWLING THEN PROCEEDED TO THE LEFT HORIZONTAL STABILIZER AND PENETRATED THE LEADING EDGE, AMKING A 12-INCH HOLE.  NO FURTHER DAMAGE OTHER THAN THE WIRING HARNESS FOR #2 ENGINE WAS RIPPED OFF.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DEN00FA078](https://openairdocs.org/ntsb/DEN00FA078), Apr 28, 2000: Douglas DC-8-62F (N990CF), Denver, CO, substantial damage. Probable cause: The failure of the clamp that secured the high-pressure bleed air duct to the high-pressure relief valve. Factors were the resulting excessive pressurization of the engine nacelle, and the subsequent…

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.

---
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.