# NTSB MIA84FA084: Douglas DC-3, N922CA, Miami, FL, February 17, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: February 17, 1984, 12:57 local (17:57 UTC)
- Place: Miami, FL
- Location: 25.7954° N, 80.2901° W: Placed by OpenAirDocs at MIAMI INTL (MIA), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7954&lon=-80.2901&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 30971
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84FA084
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30971/pdf
- Page: https://openairdocs.org/ntsb/MIA84FA084

## Sequence of events

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

- Main gear collapsed, taxi - to takeoff
  - landing gear,gear locking mechanism - unlocked (cause)
  - landing gear - improper use of, copilot/second pilot (cause)

## Analysis

WHILE TAXIING FOR TAKEOFF, THE COPLT ATTEMPTED TO INCREASE THE PRESSURE IN THE LANDING GEAR DOWNLINE BY PLACING THE LANDING GEAR HYDRAULIC HANDLE IN THE DOWN POSITION. THE COPLT BELIEVED THAT HE CONFUSED THE PROCEDURE & PULLED UP ON THE LANDING GEAR LOCK HANDLE, RATHER THAN PUSHING THE GEAR HYDRAULIC HANDLE DOWN. THIS WOULD HAVE RELEASED THE GEAR MECHANICAL LOCKS. SHORTLY AFTER THAT, THE LEFT GEAR COLLAPSED. AT THE SAME TIME, HYDRAULIC FLUID & FUMES ENTERED THE COCKPIT. AN INVESTIGATION REVEALED THAT A HYDRAULIC LINE TO THE PRESSURE GAGE HAD FAILED FROM OVER PRESSURE.AFTER REPAIRING THE LINE, THE SYS WAS TESTED & OPERATED NORMALLY.

## Aircraft

- Registration: N922CA (not matched to a registry record)
- Reported make and model: DOUGLAS DC-3
- Category: Airplane
- Serial number: 2204
- Engines: P&W R-1830-92 1200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 121
- Registered owner: Provincetown Boston Airline
- Airworthiness certificate: Standard, Transport
- Flight plan: IFR
- Airport: MIA, Miami Int'L

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 6,000 total, 400 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 57 °F
- Altimeter: 30.00 inHg
- Observed at: MIA

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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