Date:	Friday 29 April 1977
Time:	08:30
Type:	Robinson R22
Owner/operator:	Robinson Helicopters Inc
Registration:	N67010
MSN:	001
Engine model:	Lycoming O-320
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Pacific Ocean, off Rancho Palos Verdes, Los Angeles, California -   United States of America
Phase:	Take off
Nature:	Test
Departure airport:	Zamperini Field, Torrance, California (TOA/KTOA)
Destination airport:	Zamperini Field, Torrance, California (TOA/KTOA)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
After its crash on December 22, 1975 (which see) the prototype Robinson R-22, registration N67010, was repaired and rejoined the test flying program with the intention of of getting the helicopters full FAA type approval. However, N67010 crashed a second time on April 29, 1977 into the Pacific Ocean near Rancho Palos Verdes, Los Angeles, California (at approximate co ordinates 33°45′30″N 118°21′51″W) when the Tail Cone Bulkhead Failed, during a solo Engineering Test Flight to and from Robinson Helicopters Flight Text Centre at Zamperini Field, Torrance, Calfornia (TOA/KTOA)

According to the following excerpt from the official NTSB report into the accident: "EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER: PROP/ENGINE VIBRATION. PITCH CONTROL PROBLEM. TAIL CONE BULKHEAD FAILED. ENGINEERING TEST FLIGHT. BULKHEAD IS BEING REDESIGNED."

1. NTSB Identification: LAX77FUA11 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=51709&key=0&queryId=00a45b1e-378c-46aa-a37a-48685b995b9a&pgsize=50
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=67010
3. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=33304
4. [LINK NOT WORKING ANYMORE:http://coptercrazy.brinkster.net/search/r22show.asp?start=1&count=50]

Date/time	Contributor	Updates
20-Oct-2016 15:02	Dr.John Smith	Added
20-Oct-2016 15:03	Dr.John Smith	Updated [Narrative, ]
20-Oct-2016 15:06	Dr.John Smith	Updated [Narrative, ]
20-Oct-2016 15:07	Dr.John Smith	Updated [Departure airport, ]