Date:	Thursday 29 June 1978
Time:
Type:	Kawasaki-Hughes 369HS
Owner/operator:	Ministry of Agriculture, Forestry & Fisheries (MAFF)
Registration:	JA9183
MSN:	6641
Fatalities:	Fatalities: 5 / Occupants: 5
Other fatalities:	0
Aircraft damage:	Destroyed
Category:	Accident
Location:	Sakura-chi, Chiba -   Japan
Phase:	En route
Nature:	Survey
Departure airport:	Tokyo-Narita Airport
Destination airport:
Investigating agency:	JTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Crashed and burnt during security surveillance flight from Narita Airport.

CAUSE
It is presumed that this accident occurred during night flight when the pilot in command, due to a sudden change in weather conditions, aborted the surveillance flight and, while returning to base, entered instrument meteorological conditions. To exit the clouds and turn back, the pilot initiated a right descending turn, which led to a rapid right descending spiral from which recovery was not fully achieved before the aircraft crashed.

Hamburger Abendblatt 30.6.1978, p1
Flight International 20 January 1979
http://alpha.kilo.jp/aircraft_hist.html?r_number=JA9183
https://jtsb.mlit.go.jp/aircraft/rep-acci/54-4-JA9183.pdf

Date/time	Contributor	Updates
29-Apr-2011 15:04	TB	Added
29-Apr-2011 15:08	TB	Updated [Date, ]
17-Jan-2013 07:43	TB	Updated [Source, ]
15-Feb-2013 13:58	TB	Updated [Date, Location, Nature, Departure airport, Source, Narrative, ]
16-Feb-2013 13:17	TB	Updated [Aircraft type, Registration, Cn, Operator, Location, Phase, Source, Narrative, ]
16-Feb-2013 13:19	TB	Updated [Source, ]
16-Feb-2013 13:25	TB	Updated [Source, ]
15-Jul-2025 15:53	HanayoPlus	Updated [Source, Narrative, ]
15-Jul-2025 15:53	ASN	Updated [Accident report, ]