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NTSB Report
February 4, 1990 · Cessna 172M · N128S
Tomball, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 4, 1990
Injury Outcomes
1 injury (1 fatality), 2 uninjured
Location
Tomball, TX
Aircraft
Cessna 172M
Tail Number
N128S
Operator
National Aviation Services
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW90FA063
AT TIME OF HVY TFC, CESSNA 150 PLT (C150, N714RS) CTCD TWR & WAS TOLD TO RPRT ON 3 MI L BASE FOR RWY 35L. INSTEAD, HE RPRTD ON L DWNWND FOR 35L & WAS TOLD TO FLW CESSNA (N9DZ), AHD OF HIM ON DWNWND. AT 1335:00 (35 SEC LTR), CESSNA 172 PLT (C172, N128S, ON A STRAIGHT-IN-APCH) RPRTD 3 MI FINAL FOR RWY 35L; HE WAS TOLD TO FLW 'CESSNA (N9DZ) TURNING LEFT BASE IN FRONT OF YOU.' AT 1335:27, C150 PLT WAS TOLD TO FLW CESSNA (C172) ON 1-1/2 MI FINAL; C150 PLT ACKNOWLEDGED. AT 1336:29, C172 WAS CLRD TO LND (BHND N9DZ). AS C150 TURNED ON FINAL, IT CONVERGED WITH C172. TWR CTLR NOTED CONFLICT & ASKED C150 PLT IF HE COULD SIDE STEP TO RWY 35R; C150 PLT GAVE NEGATIVE REPLY, THEN WAS TOLD TO GO ARND, (NO SPECIFIC SAFETY ADZY WAS ISSUED). ABT 8 SEC LTR, THE 2 ACFT COLLIDED ABT 100' OVR RWY THRESHOLD WITH C150'S PROP SEVERING TAIL OF C172. C172 CRASHED ON RWY; C150 LNDD WITH MINOR DMG. TOX CHECK OF C172 PLT'S BLOOD INDCD 118 NG/ML OF DELTA-9-TETRA- HYDROCANNABINOL CARBOXYLIC ACID; HIS URINE HAD 1.0 MG/L OF 11-NOR-DELTA-9-TETRAHYDROCANNOBINOL-9-CARBOXYLIC ACID.
NTSB Probable Cause
FAILURE OF THE PILOT IN CESSNA 150, N714RS, TO COMPLY WITH THE AIR TRAFFIC CONTROL CLEARANCE, AND FAILURE OF BOTH PILOTS TO MAINTAIN ADEQUATE VISUAL LOOKOUT TO SEE-AND-AVOID EACH OTHER. FACTORS RELATED TO THE ACCIDENT WERE: PHYSICAL IMPAIRMENT OF THE PILOT IN THE CESSNA 172, N128S, DUE TO USE OF DRUGS (CANNABINOIDS), AND FAILURE OF THE TOWER CONTROLLER TO ISSUE A SAFETY ADVISORY.
Full Narrative
AT TIME OF HVY TFC, CESSNA 150 PLT (C150, N714RS) CTCD TWR & WAS TOLD TO RPRT ON 3 MI L BASE FOR RWY 35L. INSTEAD, HE RPRTD ON L DWNWND FOR 35L & WAS TOLD TO FLW CESSNA (N9DZ), AHD OF HIM ON DWNWND. AT 1335:00 (35 SEC LTR), CESSNA 172 PLT (C172, N128S, ON A STRAIGHT-IN-APCH) RPRTD 3 MI FINAL FOR RWY 35L; HE WAS TOLD TO FLW 'CESSNA (N9DZ) TURNING LEFT BASE IN FRONT OF YOU.' AT 1335:27, C150 PLT WAS TOLD TO FLW CESSNA (C172) ON 1-1/2 MI FINAL; C150 PLT ACKNOWLEDGED. AT 1336:29, C172 WAS CLRD TO LND (BHND N9DZ). AS C150 TURNED ON FINAL, IT CONVERGED WITH C172. TWR CTLR NOTED CONFLICT & ASKED C150 PLT IF HE COULD SIDE STEP TO RWY 35R; C150 PLT GAVE NEGATIVE REPLY, THEN WAS TOLD TO GO ARND, (NO SPECIFIC SAFETY ADZY WAS ISSUED). ABT 8 SEC LTR, THE 2 ACFT COLLIDED ABT 100' OVR RWY THRESHOLD WITH C150'S PROP SEVERING TAIL OF C172. C172 CRASHED ON RWY; C150 LNDD WITH MINOR DMG. TOX CHECK OF C172 PLT'S BLOOD INDCD 118 NG/ML OF DELTA-9-TETRA- HYDROCANNABINOL CARBOXYLIC ACID; HIS URINE HAD 1.0 MG/L OF 11-NOR-DELTA-9-TETRAHYDROCANNOBINOL-9-CARBOXYLIC ACID.
Flight
Event TypeAccident
Event Time13:37 CST
Nearest AirportDavid Wayne Hooks (0nm N)
Runway35L
Runway Length7000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 172M
Tail NumberN128S
Aircraft CategoryAir
DamageDestroyed
OperatorNational Aviation Services
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E2D · Reciprocating · 150 | Continental · O-200-A · Reciprocating · 100
Seats4
People & Injuries
Injury Summary1 injury (1 fatality), 2 uninjured
Fatal1
Serious0
Minor0
Uninjured2
Total3
Crew 1Age 36 · Third Class
Crew 2Age 45 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 12 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point61 F / 28 C
Altimeter30.00 inHg
Observation Time19:40
Weather SourceWFAC