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NTSB Report
June 3, 1984 · Grumman G-111 · N112FB
West Palm Beach, FL
Overview
Report Status
Preliminary report
Event Type
Incident
Date
June 3, 1984
Injury Outcomes
No injuries (3 uninjured)
Location
West Palm Beach, FL
Aircraft
Grumman G-111
Tail Number
N112FB
Injuries
None
Aircraft Damage
Minor
NTSB Number
MIA84IA177
AFTER A REPOSITIONING FLT, THE MAIN GEAR COLLAPSED. AN EXAM OF THE HAND PUMP SELECTOR CONTROL VALVE REVEALED THAT ONE OF THE TWO DUMP PORTS FOR THR FLAP POSITION HAD A HYDRAULIC LEAK. REPORTEDLY, THIS ALLOWED SYSTEM PRESSURE TO RETRACT THE GEAR. THE VALVE, P/N 9055-1, HAD A TOTAL FLT TIME OF 1662.8 HRS SINCE BEING INSTALLED ON 7/21/81.
Full Narrative
AFTER A REPOSITIONING FLT, THE MAIN GEAR COLLAPSED. AN EXAM OF THE HAND PUMP SELECTOR CONTROL VALVE REVEALED THAT ONE OF THE TWO DUMP PORTS FOR THR FLAP POSITION HAD A HYDRAULIC LEAK. REPORTEDLY, THIS ALLOWED SYSTEM PRESSURE TO RETRACT THE GEAR. THE VALVE, P/N 9055-1, HAD A TOTAL FLT TIME OF 1662.8 HRS SINCE BEING INSTALLED ON 7/21/81.
Flight
Event TypeIncident
Event Time08:13 EDT
Nearest AirportWest Palm Beach (0nm N)
Runway9
Runway Length7991 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman G-111
Tail NumberN112FB
Aircraft CategoryAir
DamageMinor
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsWright · R-1820-82 · Reciprocating · 1475
Seats28
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 37 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind260° @ 4 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point70 F / 63 F
Altimeter30.00 inHg
Observation Time12:25
Weather SourceWFAC