# NTSB MIA85LA042: Rockwell 690A, N44WV, Jacksonville, FL, November 21, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 21, 1984, 16:00 local (21:00 UTC)
- Place: Jacksonville, FL
- Coordinates: 30.329013, -81.579429 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.3290&lon=-81.5794&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31320
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA85LA042
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31320/pdf
- Page: https://openairdocs.org/ntsb/MIA85LA042

## Sequence of events

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

- Airframe/component/system failure/malfunction, climb - to cruise
  - hydraulic system,seal - leak (cause)
  - fluid,hydraulic - leak (cause)
  - hydraulic system - failure,total (cause)
  - precautionary landing - performed, pilot in command
- Main gear collapsed, landing - roll
  - landing gear,gear locking mechanism - failure,total (cause)
  - reason for occurrence undetermined
  - landing gear,main gear - undetermined
  - reason for occurrence undetermined

## Analysis

CLIMBING THROUGH 10,000 FT THE PLT NOTICED A RED GEAR LIGHT AND DROPPING HYD PRESSURE. PRIOR TO THE PRECAUTIONARY LANDING, ACCORDING TO THE PLT, THE GEAR WERE EXTENDED AND INDICATED DOWN AND LOCKED. WHEN REVERSE THRUST WAS APPLIED THE LEFT MAIN GEAR COLLAPSED. EXAM REVEALED A LEAKING LEFT HYD PUMP SHAFT SEAL WHICH RESULTED IN THE OVERBOARD VENTING OF HYD FLUID. THE LEFT MAIN GEAR ACTUATOR CLEVIS WAS BROKEN. METALLURGICAL EXAM INDICATED THAT IT FAILED UNDER OVERLOAD STRESS. OTHER THAN THE LEAKING SEAL NO HYD MECHANICAL MALFUNCTIONS WERE DISCOVERED.

## Aircraft

- Registration: [N44WV](https://openairdocs.org/deregistered/N44WV-1988-10-31), registration cancelled 1988-10-31, S/N 11250 (OpenAirDocs)
- Reported make and model: Rockwell 690A
- Registry model: [Rockwell International 690A](https://openairdocs.org/model/rockwell-international-690a) (registry code 7630515) (OpenAirDocs)
- Category: Airplane
- Serial number: 11250
- Airframe hours: 1950
- Engines: Garrett TPE3315251K 717 horsepower turbo prop
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Lynwood G. Willis
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 1, 1984
- Departed: SAV, SAVANNAH, GA
- Destination: CRG, JACKSONVILLE, FL
- Flight plan: IFR
- Airport: CRG, Craig Field, runway 31, 4,007 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; private; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 3,425 total, 175 in this make and model, 91 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 350° at 11 knots
- Visibility: 1 statute miles
- Lowest ceiling: 400 ft overcast
- Temperature: 45 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: JAX

## 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 19841121075589A](https://openairdocs.org/incident/19841121075589A), Nov 21, 1984: Gulstm 690A, Jacksonville, FL, Substantial damage. Engine driven hydraulic pump had faulty shaft seal, leaking. Did not use nitrogen to insure gear would lock down.

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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