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NTSB Report
August 3, 1983 · Cessna 172N · N738NV
Birmingham, AL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 3, 1983
Injury Outcomes
No injuries (2 uninjured)
Location
Birmingham, AL
Aircraft
Cessna 172N
Tail Number
N738NV
Operator
Birmingham Flying Club
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL83LA309
THE INSTRUCTOR (CFI) REPORTED THE ENG BEGAN MISSING WHEN POWER WAS APPLIED AFTER PRACTICING STALLS. A DECISION WAS MADE TO RETURN TO THE ARPT. CARBURETOR HEAT WAS APPLIED & THE THROTTLE WAS RETARDED TO DESCEND. THE MIXTURE WAS IN FULL RICH.AFTER A COUPLE OF MINUTES, THE ENG BEGAN RUNNING ROUGH & LOSING POWER. CARBURETOR HEAT & THE THROTTLE WERE ADJUSTED IN AN UNSUCCESSFUL ATTEMPT TO RESTORE POWER. A DECISION WAS MADE TO LAND ON AN UNOPENED HIGHWAY. DURING FINAL APCH, THE ACFT STRUCK A POWER LINE. SUBSEQUENTLY, IT IMPACTED THE GROUND NOSE 1ST. APRX 10 GAL OF FUEL WAS REMAINING. ALL BUT 1 SPARK PLUG WAS FOUND OILY & SOOTY. THE ENG WAS STARTED & RAN SMOOTHLY TO 1200 RPM. IT HAD 50 HRS OF OPERATION SINCE OVERHAUL. THE PLT HANDBOOK STATED CRUISE SHOULD BE AT 65 TO 75% POWER FOR 50 HRS OR UNTIL OIL CONSUMPTION HAS BEEN STOPPED. A CHAMPION SPARK PLUG PUBLICATION STATED WET, OILY PLUGS MAY BE CAUSED BY AN ENG STILL IN A BREAK-IN PERIOD.
Full Narrative
THE INSTRUCTOR (CFI) REPORTED THE ENG BEGAN MISSING WHEN POWER WAS APPLIED AFTER PRACTICING STALLS. A DECISION WAS MADE TO RETURN TO THE ARPT. CARBURETOR HEAT WAS APPLIED & THE THROTTLE WAS RETARDED TO DESCEND. THE MIXTURE WAS IN FULL RICH.AFTER A COUPLE OF MINUTES, THE ENG BEGAN RUNNING ROUGH & LOSING POWER. CARBURETOR HEAT & THE THROTTLE WERE ADJUSTED IN AN UNSUCCESSFUL ATTEMPT TO RESTORE POWER. A DECISION WAS MADE TO LAND ON AN UNOPENED HIGHWAY. DURING FINAL APCH, THE ACFT STRUCK A POWER LINE. SUBSEQUENTLY, IT IMPACTED THE GROUND NOSE 1ST. APRX 10 GAL OF FUEL WAS REMAINING. ALL BUT 1 SPARK PLUG WAS FOUND OILY & SOOTY. THE ENG WAS STARTED & RAN SMOOTHLY TO 1200 RPM. IT HAD 50 HRS OF OPERATION SINCE OVERHAUL. THE PLT HANDBOOK STATED CRUISE SHOULD BE AT 65 TO 75% POWER FOR 50 HRS OR UNTIL OIL CONSUMPTION HAS BEEN STOPPED. A CHAMPION SPARK PLUG PUBLICATION STATED WET, OILY PLUGS MAY BE CAUSED BY AN ENG STILL IN A BREAK-IN PERIOD.
Flight
Event TypeAccident
Event Time19:50 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 172N
Tail NumberN738NV
Aircraft CategoryAir
DamageSubstantial
OperatorBirmingham Flying Club
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-H2AD · Reciprocating · 160
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 24 · Second Class
Conditions
ConditionsVMC
LightDusk
Wind180° @ 5 kt
Visibility10 sm
CeilingBroken clouds 10000 ft
Temperature / Dew Point68 F
Altimeter30.00 inHg
Observation Time00:50
Weather SourceWFAC