Cessna 402B N5718M

Summary

On 18 August 1988 at about 04:03 local time, a Cessna 402B registered N5718M, operated by Wilburs Inc., was involved in an accident near Mt. Torbet, Alaska, United States. 2 people were on board and 2 died. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

18 August 1988 at 04:03

Classification

Accident

Location

Mt. Torbet, Alaska, United States

Coordinates

Not recorded

Aircraft

Cessna 402B

Registration

N5718M

Category

Airplane

Engines

2

Operator

Wilburs Inc.

Operating rule

Part 135: Air Taxi & Commuter

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Sleetmute → Anchorage

Aircraft damage

Substantial

Weather

IMC

Light

Day

NTSB number

ANC88FA111

2 people died.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

THE ON-DEMAND-CHARTER FLIGHT WAS TO ORIGINALLY PICKUP PASSENGERS AND CARGO BUT A LANDING GEAR PROBLEM FORCED ANOTHER AIRPLANE WITH A MECHANIC TO BE DISPATCHED. THE OTHER AIRPLANE RETURNED WITH THE PASSENGERS AND THE ACCIDENT AIRPLANE WAS REPAIRED BY THE MECHANIC AND DEPARTED AT A LATER TIME WITH THE CARGO ON BOARD. THE AIRPLANE WAS NOT ON A FLIGHT PLAN. INSTRUMENT METEOROLOGICAL CONDITIONS PREVAILED FROM 7000 FEET MSL TO 12,500 FEET MSL AS REPORTED BY THE OTHER COMPANY AIRPLANE. THE AIRCRAFT WAS FOUND ON THE SIDE OF MT. TORBERT AT THE 10,570 FOOT LEVEL. THE PILOT-IN-COMMAND WAS FOUND IN THE RIGHT PILOT SEAT WITH A NON-AVIATION RELATED BOOK IN HIS LAP. THE MECHANIC WAS FOUND IN THE LEFT PILOT SEAT WITH A WORLD AERONAUTICAL CHART, CD-11 OPEN ON HIS LAP. THE MECHANIC HELD A COMMERCIAL PILOTS CERTIFICATE BUT NO INSTRUMENT RATING. THE INVESTIGATION REVEALED WEAKNESSES IN COMPANY OPERATIONS.

Quoted verbatim from the NTSB record.