# NTSB NYC85LA135: Gulfstream 681, N911JM, Millville, NJ, May 25, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 25, 1985, 11:15 local (15:15 UTC)
- Place: Millville, NJ
- Location: 39.3678° N, 75.0722° W: Placed by OpenAirDocs at MILLVILLE MUNI (MIV), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.3678&lon=-75.0722&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35883
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC85LA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35883/pdf
- Page: https://openairdocs.org/ntsb/NYC85LA135

## Sequence of events

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

- Gear collapsed, landing - roll
  - reason for occurrence undetermined (cause)
- Loss of control - in flight, landing - roll
  - directional control - not possible, pilot in command

## Analysis

THE PLT REPORTED THAT WHEN THE LANDING GEAR WAS LOWERED DURING THE APCH, THE RIGHT MAIN GEAR LIGHT DID NOT ILLUMINATE, HOWEVER, THE 'IN-TRANSIT' LIGHT WENT OUT. HE ALSO REPORTED, THE GEAR WARNING HORN STOPPED SOUNDING AND THE HYDRAULIC PRESSURE WAS NORMAL. THE GEAR WAS THEN RECYCLED AND THE SAME RESULTS OCCURRED. THE GEAR APPEARED DOWN AND LOCKED DURING A VISUAL INSPECTION. THE PLT REPORTED TOUCHDOWN WAS 'LIGHT' AND EVERYTHING WAS NORMAL UNTIL THE THROTTLES WERE REDUCED AT WHICH TIME THE ACFT SEEMED TO 'HOP'. THE RIGHT GEAR THEN COLLAPSED AND THE ACFT MADE A GRADUAL TURN TO THE RIGHT. DESPITE REMEDIAL ACTION, THE ACFT CAME TO REST APRX 25 FT OFF THE RIGHT SIDE OF THE RWY.

## Aircraft

- Registration: N911JM (not matched to a registry record)
- Reported make and model: GULFSTREAM 681
- Category: Airplane
- Serial number: 6048
- Airframe hours: 3835
- Engines: GARRETT TPE-331-151K 575 horsepower turbo jet
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Donald M. Norbury
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 4, 1985, 28 hours before
- Departed: CRE, N. MYRTLE, NC
- Destination: MIV, MILLVILLE, NJ
- Flight plan: IFR
- Airport: MIV, Millville, runway 10, 5,000 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 1,092 total, 1,092 in this make and model, 960 as pilot in command, 41 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 68 °F
- Observed at: MLL

## 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 19850525020989A](https://openairdocs.org/incident/19850525020989A), May 25, 1985: Gulstm 681, Millville, NJ, Substantial damage. Unsafe gear indication and collapse of right main on landing. Upper torque link and retract cylinder broken.

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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