# NTSB CHI85LA110: Brantly Helicopter B-2, N511R, Huntingburg, IN, February 18, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 18, 1985, 10:00 local (15:00 UTC)
- Place: Huntingburg, IN
- Coordinates: 38.290557, -86.94905 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.2906&lon=-86.9490&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13003
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA110
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13003/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA110

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - mech failure/malf, hover
  - exhaust system,manifold/pipe - failure,partial (contributing factor)
  - maintenance,adjustment - improper, other maintenance personnel (cause)
  - autorotation - misjudged, pilot in command(cfi) (cause)
- Forced landing, descent - uncontrolled
- Hard landing, hover

## Analysis

THE ACFT EXPERIENCED A PARTIAL POWER LOSS AND MADE A HARD AUTOROTATIVE LNDG DURING A TRAINING FLT. INVESTIGATION OF THE ENG REVEALED MISTIMING OF THE LEFT MAG. THE ENG DURING TESTS ALSO RAN HOT UNTIL THE ADDITION OF A COOLING SHROUD. THE OTHER SIGNIFICANT FINDING IN THE ENG WAS THE OUT OF PROPER CLEARENCE SETTING OF THE #1 INTAKE VALUE. THE CYLINDERS HAD LESS THAN 2 HRS RUNNING TIME SINCE INSTALLATION SO THEY WERE NOT YET'SEATED IN'. THE PISTON PINS AND CAPS WERE WORN AND APPARENTLY NOT REPLACED DURING THE NEW CYLINDER INSTALATION. ;

## Aircraft

- Registration: [N511R](https://openairdocs.org/deregistered/N511R-2012-09-10), registration cancelled 2012-09-10, S/N 14, built 1961 (OpenAirDocs)
- Reported make and model: Brantly Helicopter B-2
- Registry model: [Brantly B-2](https://openairdocs.org/model/brantly-b-2) (registry code 1440502) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 14
- Airframe hours: 727
- Engines: LYCOMING VO-360-A1A 195 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: William H. Hatfield
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 6, 1984, 1 hours before
- Airport: 03C, Huntingburg Muni, runway 27, 4,500 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine sea, multi-engine sea, single-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 20,003 total, 250 in this make and model, 20,000 as pilot in command, 176 in the last 90 days, 45 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 4 knots
- Visibility: 10 statute miles
- Lowest ceiling: 3,300 ft overcast
- Temperature: 37 °F, dew point 25 °F
- Altimeter: 30.00 inHg
- Observed at: EVV, 42 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 (OpenAirDocs).

- [Accident 19850218003359A](https://openairdocs.org/incident/19850218003359A), Feb 18, 1985: Hynes B2, Huntingburg, IN, Substantial damage. Autorotated after partial engine failure. Bounced on touchdown. Timing was improperly set on left magneto.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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