Incident Overview
Date: Monday 21 July 1997
Aircraft Type: Learjet 31
Owner/operator: Singapore Airlines
Registration Number: 9V-ATD
Location: 48 km S of Ranong –
ÿ Thailand
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 2 / Occupants: 2
Component Affected: Aircraft Flight Control SystemAircraft Flight Control System
Category: Accident
A Learjet flight from Phuket to Ranong experienced a significant incident due to a failure to complete the required approach briefing before takeoff. This resulted in insufficient time for distance and altitude checks, leading to a descent below minimum sector altitude in adverse weather conditions, ultimately causing the aircraft to fly into high terrain.A Learjet flight from Phuket to Ranong experienced a significant incident due to a failure to complete the required approach briefing before takeoff. This resulted in insufficient time for distance and altitude checks, leading to a descent below minimum sector altitude in adverse weather conditions, ultimately causing the aircraft to fly into high terrain.
Description
The Learjet crew consisted of an instructor and a trainee pilot. For the short flight from Phuket to Ranong the crew were supposed to carry out the approach briefing before takeoff. They failed to do so, which left them little time en route to carry out the procedure and cross-checking the distance and altitude during the flight. The instructor misinterpreted the Ranong DME distance and caused the trainee pilot to descend below minimum sector altitude in unfavourable weather conditions. The aircraft consequently flew into high terrain.
Primary Cause
Misinterpretation of DME distance by the instructor.Misinterpretation of DME distance by the instructor.Share on:
