# NTSB NYC84LA308: Beech J35, N12LH, Hyannis, MA, September 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 7, 1984, 10:30 local (14:30 UTC)
- Place: Hyannis, MA
- Location: 41.6068° N, 70.3610° W: Placed by OpenAirDocs from NTSB’s distance and direction from CAPE COD GATEWAY (HYA), within about 2 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.6068&lon=-70.3610&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35763
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84LA308
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35763/pdf
- Page: https://openairdocs.org/ntsb/NYC84LA308

## Sequence of events

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

- Loss of engine power, cruise - normal
  - fluid,fuel - undetermined (cause)
  - ignition system,magneto - undetermined (cause)
  - fuel system,pump - undetermined (cause)
- Forced landing, descent - emergency
  - emergency procedure - attempted, pilot in command
- Ditching, landing - roll
  - wheels down landing in water - performed, pilot in command

## Analysis

APRX 30 MIN AFTER DEPARTURE, ACCORDING TO THE PLT, THE ENG BEGAN RUNNING ROUGH AND STOPPED ABOUT 1 MIN LATER. THE GEAR DOWN FORCED LANDING WAS MADE IN SALT WATER APRX 6 MINS FROM THE DEST ARPT. EXAM OF THE WRECKAGE BY FAA PERSONNEL REVEALED THAT THE ELECTRIC FUEL PUMP WAS INOP, THE LEFT MAG WOULD NOT FIRE WHEN THE ENG WAS ROTATED, AND THE AUX FUEL TANKS HAD NO USABLE FUEL REMAINING. BOTH MAIN TANKS WERE NEARLY FULL. NO OTHER MECHANICAL MALFUNCTIONS WERE NOTED.

## Aircraft

- Registration: [N12LH](https://openairdocs.org/deregistered/N12LH-2001-04-09), registration cancelled 2001-04-09, S/N D-5346 (OpenAirDocs)
- Reported make and model: BEECH J35
- Registry model: [Beech J35](https://openairdocs.org/model/beech-j35) (registry code 1151522) (OpenAirDocs)
- Category: Airplane
- Serial number: D5346
- Airframe hours: 2600
- Engines: CONTINENTAL IO-470-C 250 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Dr. Leslie Hayling
- Airworthiness certificate: Standard, Normal
- Departed: MVY, MARTH'S VINEYD, MA
- Destination: HYA, HYANNIS, MA
- Airport: HYA, Hyannis

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,000 total, 600 in this make and model, 1,000 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 11 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 50 °F
- Altimeter: 30.00 inHg

## 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 19840907047539A](https://openairdocs.org/incident/19840907047539A), Sep 7, 1984: Beech J35, Hyannis, MA, Substantial damage. Loss of power during cruise, ditched in sound. Aircraft sank. Mag not firing and electric fuel boost pump motor bad

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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