# NTSB ANC92LA089: Cessna 172, N61670, Anchorage, AK, June 10, 1992 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 10, 1992, 13:36 local (21:36 UTC) - Place: Anchorage, AK - Coordinates: 70.099952, -149.870162 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=70.1000&lon=-149.8702&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report May 26, 1993 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 5739 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC92LA089 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5739/pdf - Page: https://openairdocs.org/ntsb/ANC92LA089 ## Probable cause (aircraft 2) INADEQUATE VISUAL LOOK OUT BY THE PILOT OF BOTH AIRCRAFT. CONTRIBUTING TO THE ACCIDENT WERE THE PILOT'S DIVERTED ATTENTION, THE OTHER MOVING AIRCRAFT/OBJECT (C 172), AND THE EXCESSIVE TAXI SPEED OF THE C 172. ## Probable cause (aircraft 1) INADEQUATE VISUAL LOOK OUT BY THE PILOT'S OF BOTH AIRCRAFT. CONTRIBUTING TO THE ACCIDENT WAS THE EXCESSIVE TAXI SPEED BY THE PILOT OF THE CESSNA 172. ## 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 (contributing factor) - visual lookout - inadequate, pilot in command (cause) - diverted attention, pilot of other aircraft (contributing factor) - visual lookout - inadequate, pilot of other aircraft (cause) - taxispeed - excessive, pilot in command (contributing factor) - On ground/water collision with object, taxi - to takeoff - object - aircraft moving on ground (contributing factor) - visual lookout - inadequate, pilot in command (cause) - diverted attention, pilot in command (contributing factor) - visual lookout - inadequate, pilot of other aircraft (cause) - taxispeed - excessive, pilot of other aircraft (contributing factor) ## Analysis (aircraft 2) JUST AS THE CESSNA 207 WAS GETTING ONTO THE TAXIWAY FROM ITS COMPANY RAMP IT COLLIDED WITH A CESSNA 172. BOTH AIRCRAFT HAD BEEN CLEARED TO TAXI TO THE SAME RUNWAY FOR TAKEOFF. BOTH PILOTS SAID THEY DID NOT SEE EACH OTHER IN TIME TO AVOID THE COLLISION. TWO CONTROL TOWER OPERATORS STATED THAT THE CESSNA 172 WAS TAXIING AT A HIGH RATE OF SPEED. ## Analysis (aircraft 1) WHILE TAXIING ON THE TAXIWAY IN PREPARATION FOR TAKEOFF THE CESSNA 172 COLLIDED WITH A CESSNA 207 WHICH WAS JUST GETTING ONTO THE TAXIWAY FROM ITS COMPANY RAMP. BOTH AIRCRAFT HAD BEEN CLEARED TO TAXI TO THE SAME RUNWAY FOR TAKEOFF. BOTH PILOTS SAID THEY DID NOT SEE EACH OTHER IN TIME TO AVOID THE COLLISION. TWO CONTROL TOWER OPERATORS STATED THAT THE CESSNA 172 WAS TAXIING AT A HIGH RATE OF SPEED. ## Aircraft 1 - Registration: [N61670](https://openairdocs.org/aircraft/N61670), registered now, S/N 17264717, built 1975 (OpenAirDocs) - Reported make and model: CESSNA 172 - 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: 17264717 - Airframe hours: 2072 - Engines: LYCOMING O-320-E2D 150 horsepower reciprocating - Damage: Minor damage - Flight: Personal, Part 91 - Operator: Sigurd E. Colberg - Registered owner: Sigurd E. Colberg - Airworthiness certificate: Standard, Normal; Standard, Utility - Last inspection: Annual, June 1, 1992, 14 hours before - Departed: MRI - Destination: BGQ, BIG LAKE, AK - Airport: MRI, Merrill Field ## Aircraft 2 - Registration: [N7392U](https://openairdocs.org/aircraft/N7392U), registered now, S/N 20700435, built 1978 (OpenAirDocs) - Reported make and model: CESSNA 207 - Registry model: [Cessna 207A](https://openairdocs.org/model/cessna-207a) (registry code 2073604) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20700435 - Airframe hours: 7756 - Engines: CONTINENTAL IO-520 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Spernak Airways, Inc. - Registered owner: Spernak Airways, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 2, 1992, 35 hours before - Departed: MRI - Destination: 9AK4, TYONEK, AK - Flight plan: Company VFR - Airport: MRI, Merrill Field ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N61670; age 32; commercial; airplane ratings: single-engine land, single-engine sea; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 1,445 total, 840 in this make and model, 1,393 as pilot in command, 54 in the last 90 days, 25 in the last 30 days, 2 in the last 24 hours - Pilot, aircraft N7392U; age 32; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 10,000 total, 7,000 in this make and model, 9,500 as pilot in command, 300 in the last 90 days, 100 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 5 knots - Visibility: 80 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 43 °F - Altimeter: 30.00 inHg - Observed at: MRI, 1 nm away ## 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 19920610019401A](https://openairdocs.org/incident/19920610019401A), Jun 10, 1992: Cessna 172, Anchorage, AK, Minor damage. Taxi for takeoff collided wiht N7392U that was on right side turning on taxiway. Was reported taxiing fast. - [Accident 19920610019402A](https://openairdocs.org/incident/19920610019402A), Jun 10, 1992: Cessna 207, Anchorage, AK, Substantial damage. Accessing taxiway for takeoff was struck by fast taxiing N61670 that was also en route to 24. Attention diverted. 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.