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Dual Engine Flameout During Descent in Icing Conditions (N600RE)

Nacogdoches, TX, US

On October 17, 1994, a Canadair CL 600 (registration N600RE) operated by Affiliated Health Services Inc was involved in an aviation accident near Nacogdoches, TX. No fatalities were reported. Investigators recorded the probable cause as: THE FLIGHT CREW'S IMPROPER USE OF THE ANTI-ICE SYSTEM, WHICH RESULTED IN ENGINE ICE, SUBSEQUENT ICE INGESTION, AND ENGINE FLAMEOUT. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

While descending through a cloud layer at FL370, both engines flamed out after encountering turbulence and ice crystals. The crew successfully restarted the engines using APU-assisted start and landed safely.

Incident Overview

During flight at FL370, the airplane entered a cloud layer and encountered turbulence. A descent was initiated to FL330. As power was applied for level-off at FL330, the N1 indication did not respond. Descending through FL310, the #1 engine flamed out. Weather conditions included ice crystals, thunderstorm outflow, and turbulence.

Dual Engine Flameout

During an attempted cross bleed air start of the #1 engine, the #2 engine flamed out. With the Air Driven Generator (ADG) deployed, the crew successfully performed an APU-assisted start. Both engines were stabilized by 5000 feet, and the flight landed safely.

Crew Actions and Knowledge

Interviews and information from the Cockpit Voice Recorder (CVR) revealed that the crew did not call for the emergency checklist and lacked knowledge of the airplane systems. As the crew recognized the initial power loss, the captain asked the first officer if he had turned on engine anti-ice; the first officer replied that he had not.

Training Background

The crew had not attended a formal training course for the CL 600. The captain and copilot received type ratings from a Designated Pilot Examiner (DPE) in May and March 1994, respectively.

Fuel Control Unit Tests

Tests of the fuel control units revealed discrepancies in the start and acceleration schedules. However, no discrepancies were found that would have contributed to the flameouts.

Engine failure

Frequently asked questions

What happened in the 17 Oct 1994 Canadair CL 600 accident near Nacogdoches, TX?

While descending through a cloud layer at FL370, both engines flamed out after encountering turbulence and ice crystals. The crew successfully restarted the engines using APU-assisted start and landed safely.

Were there any fatalities in the 17 Oct 1994 Canadair CL 600 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 17 Oct 1994 involved a Canadair CL 600, registration N600RE, operated by Affiliated Health Services Inc, at Nacogdoches, TX.

What was the probable cause of the accident?

THE FLIGHT CREW'S IMPROPER USE OF THE ANTI-ICE SYSTEM, WHICH RESULTED IN ENGINE ICE, SUBSEQUENT ICE INGESTION, AND ENGINE FLAMEOUT. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE FLIGHT CREW TO FOLLOW THE CHECKLIST PROCEDURES AFTER FLIGHT INTO ADVERSE WEATHER CONDITIONS, AND THE AIRCREW'S LACK OF FAMILIARITY…

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02431. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.