Chelan - Stehekin

The amphibious-float-equipped airplane departed from a paved runway for the 40-nautical mile flight to its destination, where a water landing on a lake was to be made. The pilot did not raise the landing gear after takeoff. During the flight, the air was bumpy and turbulent, and this resulted in the gear advisory system activating numerous times. The purpose of the system is to alert the pilot of the landing gear position--up for a water landing or down for a runway landing--when the airspeed decreased below a set threshold value. The pilot disabled the system by pulling its circuit breaker because the alerts were becoming a nuisance; he intended to reset the breaker during descent, but did not do so. Upon reaching the destination, the pilot set up a 150- to 200-feet-per-minute rate of descent for a glassy water landing on the lake. With the landing gear in the down position, the airplane contacted the water and abruptly nosed over. The airplane came to rest floating inverted, suspended by the floats. The pilot reported that the day of the accident was his nineteenth consecutive duty day, including office duty and flight duty. He stated that he feels the lack of days off during the previous 19 days was a contributing factor to this accident. When asked what would have prevented the accident, the pilot suggested consistency in using the checklist. On two flights earlier in the day he had used a written checklist; on the accident flight he did not.

Flight / Schedule

Chelan - Stehekin

Registration

N9558Q

MSN

1151

Year of Manufacture

1958

Operator

Chelan Airways

Date

May 17, 2008 at 04:45 PM

Type

CRASH

Flight Type

Charter/Taxi (Non Scheduled Revenue Flight)

Flight Phase

Landing (descent or approach)

Crash Site

Lake, Sea, Ocean, River

Crash Location

Stehekin Washington

Region

North America • United States of America

Coordinates

48.3093°, -120.6565°

Narrative Report

On May 17, 2008 at 04:45 PM, Chelan - Stehekin experienced a crash involving De Havilland DHC-2 Beaver, operated by Chelan Airways, with the event recorded near Stehekin Washington.

The flight was categorized as charter/taxi (non scheduled revenue flight) and the reported phase was landing (descent or approach) at a lake, sea, ocean, river crash site.

5 people were known to be on board, 2 fatalities were recorded, 3 survivors were identified or estimated. This corresponds to an estimated fatality rate of 40.0%.

Crew on board: 1, crew fatalities: 0, passengers on board: 4, passenger fatalities: 2, other fatalities: 0.

The amphibious-float-equipped airplane departed from a paved runway for the 40-nautical mile flight to its destination, where a water landing on a lake was to be made. The pilot did not raise the landing gear after takeoff. During the flight, the air was bumpy and turbulent, and this resulted in the gear advisory system activating numerous times. The purpose of the system is to alert the pilot of the landing gear position--up for a water landing or down for a runway landing--when the airspeed decreased below a set threshold value. The pilot disabled the system by pulling its circuit breaker because the alerts were becoming a nuisance; he intended to reset the breaker during descent, but did not do so. Upon reaching the destination, the pilot set up a 150- to 200-feet-per-minute rate of descent for a glassy water landing on the lake. With the landing gear in the down position, the airplane contacted the water and abruptly nosed over. The airplane came to rest floating inverted, suspended by the floats. The pilot reported that the day of the accident was his nineteenth consecutive duty day, including office duty and flight duty. He stated that he feels the lack of days off during the previous 19 days was a contributing factor to this accident. When asked what would have prevented the accident, the pilot suggested consistency in using the checklist. On two flights earlier in the day he had used a written checklist; on the accident flight he did not.

Aircraft reference details include registration N9558Q, MSN 1151, year of manufacture 1958.

Geospatial coordinates for this crash are approximately 48.3093°, -120.6565°.

Fatalities

Total

2

Crew

0

Passengers

2

Other

0

Crash Summary

The amphibious-float-equipped airplane departed from a paved runway for the 40-nautical mile flight to its destination, where a water landing on a lake was to be made. The pilot did not raise the landing gear after takeoff. During the flight, the air was bumpy and turbulent, and this resulted in the gear advisory system activating numerous times. The purpose of the system is to alert the pilot of the landing gear position--up for a water landing or down for a runway landing--when the airspeed decreased below a set threshold value. The pilot disabled the system by pulling its circuit breaker because the alerts were becoming a nuisance; he intended to reset the breaker during descent, but did not do so. Upon reaching the destination, the pilot set up a 150- to 200-feet-per-minute rate of descent for a glassy water landing on the lake. With the landing gear in the down position, the airplane contacted the water and abruptly nosed over. The airplane came to rest floating inverted, suspended by the floats. The pilot reported that the day of the accident was his nineteenth consecutive duty day, including office duty and flight duty. He stated that he feels the lack of days off during the previous 19 days was a contributing factor to this accident. When asked what would have prevented the accident, the pilot suggested consistency in using the checklist. On two flights earlier in the day he had used a written checklist; on the accident flight he did not.

Occupants & Outcome

Crew On Board

1

Passengers On Board

4

Estimated Survivors

3

Fatality Rate

40.0%

Known people on board: 5

Operational Details

Schedule / Flight

Chelan - Stehekin

Operator

Chelan Airways

Flight Type

Charter/Taxi (Non Scheduled Revenue Flight)

Flight Phase

Landing (descent or approach)

Crash Site

Lake, Sea, Ocean, River

Region / Country

North America • United States of America

Aircraft Details

Registration

N9558Q

MSN

1151

Year of Manufacture

1958