Cessna T-337 G-P N98C

Summary

On 17 July 1999 at about 20:00 local time, a Cessna T-337 G-P registered N98C was involved in an accident near Snoqualmie Pass, Washington, United States. 2 people were on board and 2 died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

17 July 1999 at 20:00

Classification

Accident

Location

Snoqualmie Pass, Washington, United States

Coordinates

47.4191, -121.3706

Aircraft

Cessna T-337 G-P

Registration

N98C

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Lewistown → Seattle

Aircraft damage

Destroyed

Weather

IMC

Light

Day

NTSB number

SEA99FA126

2 people died.

The pilot's failure to maintain clearance from mountainous terrain while maneuvering below low ceilings. Factors include low ceilings and inadequate in-flight planning.

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

Read the full NTSB narrative

While en route from Lewistown, Montana, to Olympia, Washington, on an instrument flight plan, the pilot developed a problem with the aircraft's autopilot and elected to cancel his instrument flight plan and proceed to Seattle, Washington, where repairs to the aircraft could be made. The pilot stated he was going to continue on his IFR flight plan until reaching Ellensburg, Washington, and then '...change to VFR and drop down and fly through the pass.' Approximately 30 minutes after the pilot canceled his IFR flight plan, a witness observed an aircraft 'with two tail fins' fly out of the clouds and proceed westbound along the Interstate Highway. The witness, who did not see the crash, also stated that the visibility was 100-300 feet, and the clouds were low to the ground. The aircraft collided with mountainous terrain approximately 25 miles east of Seattle, Washington.

Quoted verbatim from the NTSB record.