Incident Overview

Date: Friday 13 June 1947
Aircraft Type: Amiot AAC.1 (Junkers Ju-52/3m)
Owner/operator: L’Arm‚e de L’Air
Registration Number: 245
Location: 90 km SE of Dalat – ÿ Vietnam
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 11 / Occupants: 22
Component Affected: Aircraft ? specifically the aircraft’s structure, systems, and control surfaces.Aircraft ? specifically the aircraft’s structure, systems, and control surfaces.
Category: Accident
On June 13, 1947, a tragic aviation incident occurred when pilot Andr‚ Dechelotte, flight engineer Repesse, navigator Andr‚ Graveret, radio telegraphist Sgt. Casanova, and flight nurse Lucienne Just were transporting patients from Tan Son Nhut to Dalat, a sanatorium in Vietnam, via an ambulance flight. The flight, carrying seventeen passengers, was hampered by inclement weather ? a monsoon season ? and poor visibility, necessitating IFR conditions. The pilot initiated a descent through stratocumulus clouds before encountering terrain emerging from the clouds, resulting in a catastrophic crash. The aircraft broke apart, with the front portion continuing beyond the crest and the rear section remaining on the other half. A significant fire subsequently consumed the wreckage, resulting in the deaths of ten passengers, eight injured, and one fatality ? pilot Dechelotte, navigator Graverette, and flight mechanic Repesse. The incident was witnessed by locals, who organized a rescue expedition. Upon arrival, investigators discovered a scene of devastation, with ten individuals deceased, eight injured, and a further four escaping injury. The aircraft crashed 10 kilometers off-course, likely due to prevailing winds and navigational errors, despite initial instrument flight conditions suggesting a level landing.On June 13, 1947, a tragic aviation incident occurred when pilot Andr‚ Dechelotte, flight engineer Repesse, navigator Andr‚ Graveret, radio telegraphist Sgt. Casanova, and flight nurse Lucienne Just were transporting patients from Tan Son Nhut to Dalat, a sanatorium in Vietnam, via an ambulance flight. The flight, carrying seventeen passengers, was hampered by inclement weather ? a monsoon season ? and poor visibility, necessitating IFR conditions. The pilot initiated a descent through stratocumulus clouds before encountering terrain emerging from the clouds, resulting in a catastrophic crash. The aircraft broke apart, with the front portion continuing beyond the crest and the rear section remaining on the other half. A significant fire subsequently consumed the wreckage, resulting in the deaths of ten passengers, eight injured, and one fatality ? pilot Dechelotte, navigator Graverette, and flight mechanic Repesse. The incident was witnessed by locals, who organized a rescue expedition. Upon arrival, investigators discovered a scene of devastation, with ten individuals deceased, eight injured, and a further four escaping injury. The aircraft crashed 10 kilometers off-course, likely due to prevailing winds and navigational errors, despite initial instrument flight conditions suggesting a level landing.

Description

On Friday, June 13th 1947, Amiot AAC.1 nø245 of Groupe de Transport I/64 ‘B‚arn’ of the Groupement des Moyens Militaires de Transport A‚rien of the Arm‚e de l’Air (GT I/64, G.M.M.T.A.) was assigned for the regular ambulance flight transporting patients from Tan Son Nhut, Saigon, to the sanatorium at Dalat. Its crew consisted of pilot Sgt. Andr‚ Dechelotte; flight engineer Repesse; navigator Andr‚ Graveret; radio telegraphist Sgt. Casanova; and flight nurse Lucienne Just. It was carrying 17 passengers including women and children. The flight took place during the local monsoon season and was conducted under poor meteorological conditions, forcing the pilot to fly under IFR conditions. Its destination airport, Dalat, was located at an elevation of 962 m with surrounding mountains rising to 1500 m; the minimum safety altitude was 2000 m so in order to avoid terrain the flight maintained an altitude of 3000 m. With only wartime English air maps of the region at their disposal and no radio beacon available at Dalat, the flight was navigated using dead reckoning. About half an hour into an hour-long flight, the pilot started his descent through stratocumulus clouds. During his descent he suddenly saw terrain emerge from the clouds in front of him. Before he could pull up, the aircraft hit a mountain crest, causing the aircraft to break into two parts, with the front continuing beyond the crest, and the fuselage aft of the wings remaining on the other half. A post-crash fire partly consumed the aircraft’s wreckage. The crash was witnessed by locals who organised a rescue expedition. On arriving at the wreckage, they found ten occupants had been killed outright, eight had been injured to varying degrees either through the crash or the ensuing fire, and a further four had escaped injury. During the evacuation of the survivors, one further crew member succumbed to his injuries. Pilot Dechelotte, navigator Graverette and flight mechanic Repesse survived the accident but sustained injuries; flight nurse Just was killed on impact; and radio telegraphist Casanova died as a result of severe burns during the medevac. Nine out of seventeen passengers did not survive, including four children. The aircraft was found to have crashed 10 km off-course, either through prevailing winds pushing it off its planned flight course; a navigation error or a combination of both. As a result of the prevailing instrument flight conditions, this meant the pilot initiated his descent over mountainous terrain when he expected to be over level terrain. The aircraft impacted terrain at 1100m altitude.

Source of Information

https://books.google.be/books?id=ZlrT3EOUPZ0C&lpg=PA118&dq=%22lucienne%20just%22%201947&hl=nl&pg=PA117#v=onepage&q=%22lucienne%20just%22%201947&f=false, https://gallica.bnf.fr/ark:/12148/bpt6k47494156/f4.item.zoom, https://gallica.bnf.fr/ark:/12148/bpt6k4749416m/f3.item.zoom, http://nla.gov.au/nla.news-page1007108https://books.google.be/books?id=ZlrT3EOUPZ0C&lpg=PA118&dq=%22lucienne%20just%22%201947&hl=nl&pg=PA117#v=onepage&q=%22lucienne%20just%22%201947&f=false, https://gallica.bnf.fr/ark:/12148/bpt6k47494156/f4.item.zoom, https://gallica.bnf.fr/ark:/12148/bpt6k4749416m/f3.item.zoom, http://nla.gov.au/nla.news-page1007108

Primary Cause

Inadequate navigation and weather conditions, specifically the pilot’s deviation from planned flight path due to mountainous terrain and poor visibility, combined with the pilot’s decision to initiate a descent through stratocumulus clouds, leading to a catastrophic crash.Inadequate navigation and weather conditions, specifically the pilot’s deviation from planned flight path due to mountainous terrain and poor visibility, combined with the pilot’s decision to initiate a descent through stratocumulus clouds, leading to a catastrophic crash.

Share on:

Leave a Reply

Your email address will not be published. Required fields are marked *