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NTSB Report
June 4, 1989 · Beech A24R · N9700Q
Gulfport, MS
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 4, 1989
Injury Outcomes
No injuries (3 uninjured)
Location
Gulfport, MS
Aircraft
Beech A24R
Tail Number
N9700Q
Operator
Capital City Air Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA89LA168
WHILE CRUISING IN VFR CONDS ON AN IFR FLT PLAN, THE ENG FAILED & THE PLT ELECTED TO LAND ON A ROAD. AS HE WAS MAKING AN APCH TO LAND, THE ACFT COLLIDED WITH A POWER LINE & A TREE. AN EXAM OF THE ENG REVEALED THE #2 CONNECTING ROD ASSEMBLY HAD FAILED & THE #2 CYLINDER HAD SUBSEQUENTLY SEPARATED. ACCORDING TO THE ACFT OWNER, THE ACFT HAD PREVIOUSLY BEEN INVOLVED IN A SUDDEN ENG STOPPAGE AFTER THE NOSE GEAR HAD COLLAPSED. THE ENG WAS THEN OVERHAULED. AFTER ABOUT ANOTHER 15 HRS OF OPN, THE NOSE GEAR COLLAPSED AGAIN. SUBSEQUENTLY, A DIE PENETRANT CHECK & RUNOUT OF THE CRANKSHAFT FLANGE WAS MADE. ACCORDING TO THE ENG MANUFACTURER, THE INSTALLED CONNECTING RODS & BEARINGS DID NOT CONFORM TO LYCOMING SVC BULLETING #439, DATED 2/17/79. THE ACFT HAD BEEN OPERATED SOME 200 TO 300 HRS SINCE THE LAST ENG OVERHAUL (FOLLOWING THE 1ST GEAR COLLAPSE).
NTSB Probable Cause
FAILURE OF A #2 CONNECTING ROD ASSEMBLY, WHICH RESULTED IN SEPARATION OF THE #2 CYLINDER AND SUBSEQUENT LOSS OF ENGINE POWER. CONTRIBUTING FACTORS WERE: INADEQUATE MAINTENANCE, THE TRANSMISSION (POWER) LINE, AND TREES.
Full Narrative
WHILE CRUISING IN VFR CONDS ON AN IFR FLT PLAN, THE ENG FAILED & THE PLT ELECTED TO LAND ON A ROAD. AS HE WAS MAKING AN APCH TO LAND, THE ACFT COLLIDED WITH A POWER LINE & A TREE. AN EXAM OF THE ENG REVEALED THE #2 CONNECTING ROD ASSEMBLY HAD FAILED & THE #2 CYLINDER HAD SUBSEQUENTLY SEPARATED. ACCORDING TO THE ACFT OWNER, THE ACFT HAD PREVIOUSLY BEEN INVOLVED IN A SUDDEN ENG STOPPAGE AFTER THE NOSE GEAR HAD COLLAPSED. THE ENG WAS THEN OVERHAULED. AFTER ABOUT ANOTHER 15 HRS OF OPN, THE NOSE GEAR COLLAPSED AGAIN. SUBSEQUENTLY, A DIE PENETRANT CHECK & RUNOUT OF THE CRANKSHAFT FLANGE WAS MADE. ACCORDING TO THE ENG MANUFACTURER, THE INSTALLED CONNECTING RODS & BEARINGS DID NOT CONFORM TO LYCOMING SVC BULLETING #439, DATED 2/17/79. THE ACFT HAD BEEN OPERATED SOME 200 TO 300 HRS SINCE THE LAST ENG OVERHAUL (FOLLOWING THE 1ST GEAR COLLAPSE).
Flight
Event TypeAccident
Event Time10:43 CDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech A24R
Tail NumberN9700Q
Aircraft CategoryAir
DamageSubstantial
OperatorCapital City Air Service
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1B · Reciprocating · 200
Seats4
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 26 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind160° @ 8 kt
Visibility10 sm
CeilingBroken clouds 25000 ft
Altimeter30.00 inHg
Observation Time15:47
Weather SourceWFAC