NTSB CAROL · Event
Event MIA89IA247
Registry · N9604R
FAA Aircraft Registry record.
Make / Model
BEECH G18S
Year of manufacture
1959 · 30 years old at event
Engine
P&W R-985 SERIES (450 hp)
Seats / Engines
10 seats · 2 engines
Last airworthiness date
19591021
ADS-B equipped
Yes — Mode-S AD5F1A
Registrant of record
BOHL HOWARD M
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
FAILURE OF THE PILOT TO CORRECTLY PERFORM THE EMERGENCY GEAR EXTENSION PROCEDURES. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF THE NORMAL GEAR EXTENSION SYSTEM.
Factual narrative
THE PLT LOWERED THE LANDING GEAR SELECTOR HANDLE WHILE ON APCH TO LAND BUT THE GEAR DID NOT EXTEND. THE FLT DEPARTED THE ARPT TRAFFIC AREA & THE PLT ATTEMPTED TO LOWER THE GEAR VIA THE EMERGENCY EXTENSION PROCEDURES BUT WAS UNABLE. THE PLT PERFORMED A LOW APCH PAST THE TOWER FOR CONFIRMATION THAT THE GEAR WAS DOWN & WAS ADVISED THAT IT APPEARED TO BE. THE FLT RETURNED FOR LANDING & AFTER TOUCHDOWN, THE GEAR COLLAPSED. AFTER THE INCIDENT WHILE RAISING THE PLANE FROM THE RWY, THE PLT WAS ASKED TO LOWER THE GEAR VIA THE EMERGENCY METHOD BUT WAS UNABLE BECAUSE HE RELEASED THE CLUTCH WHILE CRANKING THE GEAR DOWN. THE CORRECT PROCEDURE WAS TO HOLD THE CLUTCH IN WHILE DOING SO. AN EXAM OF THE ACFT REVEALED A FAILURE OF THE DYNAMIC BRAKE RELAY. THE PURPOSE OF THE RELAY WAS TO PREVENT COASTING OF THE GEAR MOTOR & GEARS BY MOMENTARILY REVERSING THE MOTOR WHEN THE UP LIMIT WAS REACHED, BUT THE FAILURE PREVENTED IT FROM DOING SO. THE FAILED COMPONENT WAS REPLACED & THE GEAR OPERATED NORMALLY. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1989_MIA89IA247.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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