CHI86LA134

NTSB accident investigation · Brantly Helicopter B-2B · Mt Clemens, MI · April 27, 1986

Accident · Serious injuriesLimited investigationFinal report
Date
April 27, 1986, 13:18 local (17:18 UTC)
Place
Mt Clemens, MI
Injuries
2 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N2194UBrantly Helicopter B-2B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860427014509A
Case key
13456

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

On this page

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.

Loss of engine power(total) - mech failure/malfDescent
Maintenance,annual inspection - not performedCompany/operator managementFactor
Procedures/directives - not followedPilot in commandFactor
QualificationPilot in commandFactor
Maintenance,inspection - improperOther maintenance personnelCause
Engine assembly,connecting rod - failure,totalCause
Forced landingDescent - emergency
Autorotation - performedPilot in command
In flight collision with objectLanding - flare/touchdown
Terrain condition - none suitableFactor
Object - tree(s)Factor

Analysis

After aprx 20 successful takeoffs & landings, the eng of the helicopter lost power at about 300 ft AGL, due to a #1 connecting rod failure. During an autorotation, the helicopter landed in trees & was destroyed. Although the pilot was instructing a new student pilot, he held no FAA flying certificate. The last annual inspection of the helicopter was dated 12/2/75. A teardown of the eng revealed discrepancies in the installation of the #2, #3 & #4 rod caps. Due to the damage, proper installation of the #1 rod cap could not be verified.

Aircraft

Registration
N2194U
Reported as
Brantly Helicopter B-2B
Category
Helicopter
Serial number
405
Engine
Lycoming IVO-360-A1A, 200 horsepower, reciprocating
Damage
Destroyed
Flight
Instructional · Part 91
Registered owner
Edward C. Thomas
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 2, 1975 · 12 hours before

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
41
Seat
Right
Flight hours
8 in this make and model · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 5 knots
Visibility
8 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 57 °F
Altimeter
30.00 inHg
Observed at
DET, 15 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.

Other investigations on N2194U · 2

Matched to the same aircraft by N-number and date.