# NTSB FTW85FA050: Hughes 269B, N9336F, Clint, TX, November 13, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: November 13, 1984, 16:23 local (23:23 UTC)
- Place: Clint, TX
- Coordinates: 31.589067, -106.219871 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.5891&lon=-106.2199&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21508
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW85FA050
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21508/pdf
- Page: https://openairdocs.org/ntsb/FTW85FA050

## Sequence of events

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

- Airframe/component/system failure/malfunction, maneuvering - turn to landing area (emergency)
  - rotor drive system,main rotor mast(drive shaft) - binding(mechanical) (cause)
  - rotor rpm - inadequate (cause)
  - maintenance,compliance with ad - not performed, company maintenance personnel (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

N9336F, CRASHED WHILE ON A TRAINING FLT. THE CERTIFIED FLT INSTRUCTOR & HIS STUDENT WERE KILLED. INVESTIGATION REVEALED THAT THE MAIN DRIVE SHAFT THRUST BEARING HAD FAILED. A SERVICE BULLETIN DATED 1968 MANDATED REPLACEMENT OF THE BEARING AT 300 HR TIME IN SERVICE INTERVAL.

## Aircraft

- Registration: [N9336F](https://openairdocs.org/deregistered/N9336F-2013-05-22), registration cancelled 2013-05-22, S/N 24-0030, built 1967 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 24-0030
- Engines: LYCOMING HIO-360-A1A 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Instructional, Part 91
- Registered owner: Harold D. Jones
- Airworthiness certificate: Standard, Utility

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: right; toxicology performed; flight hours: 8,216 total, 4 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 6 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: ELP, 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 (OpenAirDocs).

- [Accident 19841113061549A](https://openairdocs.org/incident/19841113061549A), Nov 13, 1984: Hughes 269B, Clint, TX, Destroyed. Aircraft trailed smoke and made near vertical descent to ground. Failure of main rotor drive shaft thrust bearing.

## Other investigations on N9336F (2)

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.

- [NTSB LAX82DA154](https://openairdocs.org/ntsb/LAX82DA154), May 1, 1982: Hughes 269B (N9336F), North Las Vegas, NV, destroyed
- [NTSB CHI78FEK20](https://openairdocs.org/ntsb/CHI78FEK20), May 24, 1978: Hughes 269B (N9336F), Mechanicsburg, OH, destroyed

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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