# NTSB DEN93LA004: Cessna 172N, N3501E, Addison, TX, October 10, 1992 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 10, 1992, 17:25 local (22:25 UTC) - Place: Addison, TX - Coordinates: 32.960102, -96.829544 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=32.9601&lon=-96.8295&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report September 14, 1993 - Report: Approved by Office Director - NTSB case key (mKey): 18257 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN93LA004 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18257/pdf - Page: https://openairdocs.org/ntsb/DEN93LA004 ## Probable cause (aircraft 2) THE ATTEMPT BY BOTH PILOTS TO PASS EACH OTHER WITHOUT ADEQUATE CLEARANCE BETWEEN THEIR AIRPLANES. ## Probable cause (aircraft 1) THE ATTEMPT BY BOTH PILOTS TO PASS EACH OTHER WITHOUT ADEQUATE CLEARANCE BETWEEN THEIR AIRPLANES. ## 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 - object - aircraft moving on ground - clearance - inadequate, pilot in command (cause) - clearance - inadequate, pilot of other aircraft (cause) - On ground/water collision with object, taxi - from landing - object - aircraft moving on ground - clearance - inadequate, pilot in command (cause) - clearance - inadequate, pilot of other aircraft (cause) ## Analysis (aircraft 2) THE PILOT OF N3501E WAS CLEARED BY GROUND CONTROL TO TAXI SOUTH ON TAXIWAY A TO RUNWAY 33. THE PILOT OF N1440V, WHO HAD JUST LANDED, WAS CLEARED BY GROUND CONTROL TO TAXI NORTH ON TAXIWAY A. BOTH PILOTS OBSERVED EACH OTHER'S APPROACH AND STEERED THEIR AIRPLANES TO THE FAR RIGHT SIDE OF THE TAXIWAY IN ORDER TO PASS. THE LEFT WINGS OF BOTH AIRPLANES MADE CONTACT. TAXIWAY A IS 50 FEET WIDE. BOTH AIRPLANES HAVE WINGSPANS OF 36 FEET. ## Analysis (aircraft 1) THE PILOT OF 3501E WAS CLEARED BY GROUND CONTROL TO TAXI SOUTH ON TAXIWAY A TO RUNWAY 33. THE PILOT OF N1440V, WHO HAD JUST LANDED, WAS CLEARED BY GROUND CONTROL TO TAXI NORTH ON TAXIWAY A. BOTH PILOTS OBSERVED EACH OTHER'S APPROACH AND STEERED THEIR AIRPLANES TO THE FAR RIGHT OF THE TAXIWAY IN ORDER TO PASS. THE LEFT WINGS OF BOTH AIRPLANES MADE CONTACT. TAXIWAY A IS 50 FEET WIDE. BOTH AIRPLANES HAVE WINGSPANS OF 36 FEET. ## Aircraft 1 - Registration: N3501E (not matched to a registry record) - Reported make and model: CESSNA 172N - Category: Airplane - Serial number: 17271571 - Airframe hours: 2653 - Engines: LYCOMING O-320-H2AD 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Managerie Enterprises, Inc., doing business as Monarch Air - Registered owner: Grieve, Kenneth & Tricia C. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 27, 1992, 46 hours before - Departed: ADS - Destination: TKI, MCKINNEY, TX - Airport: ADS, Addison ## Aircraft 2 - Registration: [N1440V](https://openairdocs.org/deregistered/N1440V-2010-09-13), registration cancelled 2010-09-13, S/N 17263578, built 1974 (OpenAirDocs) - Reported make and model: CESSNA 172M - Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17263578 - Airframe hours: 2975 - Engines: LYCOMING O-320-E2D 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Stramel Aviation, Inc. - Registered owner: Stramel Aviation, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 25, 1992, 45 hours before - Departed: OKC, OKLAHOMA CITY, OK - Destination: ADS - Airport: ADS, Addison ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N3501E; age 27; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 67 total, 2 in this make and model, 3 as pilot in command, 42 in the last 90 days, 2 in the last 30 days - Pilot, aircraft N1440V; age 34; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 77 total, 31 in this make and model, 48 as pilot in command, 31 in the last 90 days, 31 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 10 knots - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 75 °F - Altimeter: 30.00 inHg ## 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 19921010041562A](https://openairdocs.org/incident/19921010041562A), Oct 10, 1992: Cessna 172N, Dallas, TX, Substantial damage. Cleared by tower to taxi on taxiway a to ramp. Left wing tip collided with N1440V. Cleared to 33 via same taxiway. - [Accident 19921010041541A](https://openairdocs.org/incident/19921010041541A), Oct 10, 1992: Cessna 172M, Dallas, TX, Substantial damage. Cleared by tower to taxi for takeoff via taxiway a. left wing collided with N3501E cleared same taxiway to ramp. 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.