Accident MBB BK 117A-4 N120HH, Sunday 9 April 1989

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Date:	Sunday 9 April 1989
Time:	06:49
Type:	MBB BK 117A-4
Owner/operator:	Memorial Hermann Hospital System
Registration:	N120HH
MSN:	7132
Total airframe hrs:	529 hours
Engine model:	Lycoming LTS 101-650B
Fatalities:	Fatalities: 0 / Occupants: 3
Other fatalities:	0
Aircraft damage:	Destroyed
Category:	Accident
Location:	Houston, TX - United States of America
Phase:	Take off
Nature:	Ambulance
Departure airport:	Houston, TX
Destination airport:	Channelview, TX
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Crashed after tail rotor contacted top of a building on take-off from a temporary landing zone in a parking lot.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
FAILURE OF THE PILOT TO MAINTAIN CLEARANCE FROM THE OBSTRUCTION (GARAGE). FACTORS RELATED TO THE ACCIDENT WERE: DARKNESS, ADVERSE WEATHER CONDITIONS, PERSONNEL IN THE AREA OF THE TEMPORARY HELIPORT, LACK OF SECURITY PROVIDED BY HOSPITAL MANAGEMENT, WHICH RESULTED IN A NECESSITY FOR THE PLT TO DIVERT HIS ATTENTION, AND THE PILOT'S LACK OF VISUAL QUES.

Accident investigation:


Investigating agency:	NTSB
Report number:	FTW89FA078
Status:	Investigation completed
Duration:
Download report:	Final report

Sources:

https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X28090&key=1

Revision history:

Date/time Contributor Updates

25-Jul-2010 00:11 Alpine Flight Added

25-Jul-2010 03:07 Alpine Flight Updated [Date, ]

20-Aug-2010 02:51 TB Updated [Aircraft type, ]

20-Aug-2010 05:01 TB Updated [Operator, ]

20-Nov-2012 03:53 TB Updated [Phase, Source, Narrative, ]

24-Apr-2016 19:33 Aerossurance Updated [Source, Narrative, ]

21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency, ]

Date/time	Contributor	Updates
25-Jul-2010 00:11	Alpine Flight	Added
25-Jul-2010 03:07	Alpine Flight	Updated [Date, ]
20-Aug-2010 02:51	TB	Updated [Aircraft type, ]
20-Aug-2010 05:01	TB	Updated [Operator, ]
20-Nov-2012 03:53	TB	Updated [Phase, Source, Narrative, ]
24-Apr-2016 19:33	Aerossurance	Updated [Source, Narrative, ]
21-Dec-2016 19:25	ASN Update Bot	Updated [Time, Damage, Category, Investigating agency, ]

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