NYC92FA123

NTSB accident investigation · MBB BK-117 · Middletown, CT · June 21, 1992

Accident · FatalField investigationFinal report
Date
June 20, 1992, 22:33 local (Jun 21, 1992, 02:33 UTC)
Place
Middletown, CT
Injuries
1 fatal, 3 serious; on the ground: 1 serious
Damage
Destroyed
Phase of flight
Approach
Aircraft
N117HHMBB BK-117
Weather
Instrument (IMC) · Night/dark
Status
Completed · report June 21, 1993
Report
Approved by Office Director
FAA report
19920620021379A
Case key
37065

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

A wire strike after the pilot made a decision to continue the approach into an area of hazards. Factors related to the accident were the failure of the pilot and the hospital communicator to request all available information about the landing area and environmental conditions.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectApproach
Information - not obtainedOther personFactor
Information - not obtainedPilot in commandFactor
Weather condition - fogFactor
Light condition - dark nightFactor
In-flight planning/decision - inadequatePilot in commandCause
Visual lookout - not possiblePilot in command
Object - wire,static

Analysis

The northbound EMS helicopter struck an unmarked static wire 105 ft above the ground, 1/4 mile south of his landing area. The tail boom separated from the fuselage and the helicopter descended uncontrollably, striking the ground inverted, fatally injuring one occupant. When interviewed after the accident, the pilot said he did not remember the accident. Witnesses said the night was dark with fog beginning to form, and no abrupt maneuvers were observed prior to the wire strike. The investigation found the pilot had not made a recon of the area, nor had he communicated that he had identified the landing area when the wire strike occurred. There were numerous emergency vehicles in the area with red and blue flashing lights when the accident occurred. Additionally, neither the pilot or hospital communications coordinator who took the request for the helicopter, had requested any hazard information about the proposed landing area.

Aircraft

Registration
N117HH
Reported as
MBB BK-117
Category
Helicopter
Serial number
7015
Airframe hours
3,625
Engine
Lycoming LTS-101-650B1, 650 horsepower, turbo shaft
Damage
Destroyed
Flight
Positioning · Part 91
Operator
Rocky Mountain Helicopters
Registered owner
Deutsche Credit Corp
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · June 6, 1992 · 23 hours before
Departed
0CT9 · Hartford, CT
Flight plan
Company VFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
4,352 total · 801 in this make and model · 37 in the last 90 days · 13 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
Calm
Visibility
4 statute miles
Lowest ceiling
6,000 ft overcast
Temperature
66 °F
Altimeter
29.00 inHg
Observed at
HFD, 20 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.