Bombardier CL-600-2B19 N991CA

Summary

On 27 February 2002 at about 12:01 local time, a Bombardier CL-600-2B19 registered N991CA, operated by Comair, Inc., was involved in an incident near Appleton, Wisconsin, United States. 38 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

27 February 2002 at 12:01

Classification

Incident

Location

Appleton, Wisconsin, United States

Nearest airport

Outagamie County Regional (ATW)

Coordinates

44.2596, -88.3899

Aircraft

Bombardier CL-600-2B19

Registration

N991CA

Category

Airplane

Engines

2

Operator

Comair, Inc.

Operating rule

Part 121: Air Carrier

Phase of flight

Not recorded

Route

Appleton → Covington

Aircraft damage

Minor

Weather

VMC

Light

Dawn

NTSB number

CHI02IA083

Nobody was injured.

The separation of the low pressure turbine module due to coke resulting in the blockage of the oil system.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The scheduled commercial passenger flight returned to the departure airport after the number two engine's low pressure turbine module separated from the engine and departed the airplane while climbing through 3,000 mean sea level and 4 nautical miles from the airport. Examination of the B-sump forward scavenge screen revealed that the entire screen area was blocked with coke including several metallic flakes, the largest of which was 1/3 inch by 1/3 inch. The screen was also partially collapsed. An oil sample from the B-sump forward scavenge line was black and contained black particles. The B-sump aft scavenge screen was estimated to have been approximately 90 percent blocked and contained some metallic flakes. An oil sample from the B-sump aft scavenge line was black and contained black particles. The C-sump forward scavenge screen contained a block of about 75 percent with coke. The center portion of the screen was clear. The C-sump aft screen was 5 percent blocked. The oil filter contained black particles and black oil. The impending bypass button on the oil filter was popped.

Quoted verbatim from the NTSB record.