# NTSB LAX82DA097: Cessna 150, N5678E, Half Moon Bay, CA, March 6, 1982 - Type: NTSB accident investigation - Classification: Accident · No injuries · Final report - Date: March 6, 1982, 14:00 local (22:00 UTC) - Place: Half Moon Bay, CA - Location: 37.5134° N, 122.5012° W: Placed by OpenAirDocs at HALF MOON BAY (HAF), within about a mile (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=37.5134&lon=-122.5012&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report March 6, 1983 - Report: Approved by Office Director - NTSB case key (mKey): 70940 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX82DA097 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70940/pdf - Page: https://openairdocs.org/ntsb/LAX82DA097 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, taxi - to takeoff - terrain condition - soft (contributing factor) - supervision - inadequate, pilot in command(cfi) (cause) - visual lookout - inadequate, dual student (cause) - lack of total experience, dual student (contributing factor) - visual lookout - inadequate, pilot of other aircraft (cause) - object - aircraft moving on ground (contributing factor) - On ground/water collision with object, taxi - to takeoff - visual lookout - inadequate, pilot in command (cause) - visual lookout - inadequate, pilot of other aircraft (cause) ## Analysis (aircraft 2) THE PILOT OF TAYLORCRAFT, N94906, WAS MAKING MILD S-TURNS AS HE PROCEEDED DOWN A TAXIWAY. AS HE WAS MAKING AN S-TURN BACK TO THE RIGHT, HE SAW A CESSNA 150, N5678E, AT THE RIGHT EDGE OF THE TAXIWAY ON A CONVERGING COURSE. HE TURNED LEFT TO AVOID A COLLISION, BUT WAS TOO LATE. PREVIOUSLY, THE AIRCREW OF THE CESSNA 150 HAD BECOME MIRED IN SOFT EARTH NEAR THE TAXIWAY. THE INSTRUCTOR PILOT IN N5678E HAD STEPPED OUT AND WAS PUSHING WHILE THE STUDENT REMAINED AT THE CONTROLS. ## Analysis (aircraft 1) THE AIRCREW IN CESSNA, N5678E, WERE TAXIING FROM THE TIE-DOWN AREA WHEN THE AIRCRAFT BECAME MIRED IN SOFT EARTH NEAR THE TAXIWAY. THE INSTRUCTOR PILOT STEPPED OUT TO PUSH WHILE THE STUDENT REMAINED AT THE CONTROLS. AT THE SAME TIME, THE PILOT OF TAYLORCRAFT, N94906, WAS MAKING MILD S-TURNS WHILE PROCEEDING DOWN THE TAXIWAY. A COLLISION OF THE AIRCRAFT OCCURRED ON THE TAXIWAY. ## Aircraft 1 - Registration: [N5678E](https://openairdocs.org/aircraft/N5678E), registered now, S/N 17178 (OpenAirDocs) - Reported make and model: CESSNA 150 - Registry model: [Cessna 150](https://openairdocs.org/model/cessna-150) (registry code 2071802) (OpenAirDocs) - Category: Airplane - Serial number: 17178 - Airframe hours: 3410 - Engines: CONTINENTAL O-200 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Arnold Seepol - Registered owner: Steve D. Chial - Departed: HAF, HALF MOON BAY, CA - Destination: HAF, HALF MOON BAY, CA - Airport: HAF, Half Moon Bay, runway 12, 4,200 × 0 ft, concrete ## Aircraft 2 - Registration: [N94906](https://openairdocs.org/deregistered/N94906-2012-08-01), registration cancelled 2012-08-01, S/N 9306, built 1946 (OpenAirDocs) - Reported make and model: TAYLORCRAFT BC12-D - Registry model: [Taylorcraft BC12-D](https://openairdocs.org/model/taylorcraft-bc12-d) (registry code 8850316) (OpenAirDocs) - Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 9306 - Airframe hours: 2171 - Engines: CONTINENTAL A-75-8 75 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Ronald A. Williams - Registered owner: Ronald A. Williams - Departed: HAF, HALF MOON BAY, CA - Destination: MOD, MODESTO, CA - Airport: HAF, Half Moon Bay, runway 12, 4,200 × 0 ft ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N5678E; age 55; flight instructor, commercial; instrument ratings: airplane; medical: unknown, unknown - Pilot, aircraft N94906; age 42; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; flight hours: 1,417 total, 656 in this make and model, 1,303 as pilot in command, 13 in the last 90 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 5 knots - Visibility: 50 statute miles - Temperature: 149 °F ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19820306002701A](https://openairdocs.org/incident/19820306002701A), Mar 6, 1982: Cessna 150, Half Moon Bay, CA, Substantial damage. Aircraft collided with N94906 when Cessna was attempting to pull out of soft parking area. - [Accident 19820306002702A](https://openairdocs.org/incident/19820306002702A), Mar 6, 1982: Tcraft BC12D, Half Moon Bay, CA, Substantial damage. Aircraft collided with N5678E when Cessna was attempting to pull out of soft parking area. ## Other investigations on N5678E (2) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB FTW69D0283](https://openairdocs.org/ntsb/FTW69D0283), Oct 6, 1968: Cessna 150 (N5678E), Aransas Pass, TX, substantial damage - [NTSB FTW66D0349](https://openairdocs.org/ntsb/FTW66D0349), Sep 14, 1965: Cessna 150 (N5678E), Portland, TX, substantial damage From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.