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Atlas / NTSB / GAA16CA442

NTSB CAROL · Event

Event GAA16CA442

2016-08-20 Anchorage, Alaska, United States Airport · EDF None 1 aircraft Status: Completed

Registry · N35408

FAA Aircraft Registry record.

Make / Model

CESSNA 172R

Seats / Engines

4 seats · 1 engine

ADS-B equipped

Yes — Mode-S A3F622

Registrant of record

ELMENDORF AERO CLUB

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The facility's designation of the taxiway for use by maintenance personnel to conduct high thrust tests without appropriate safeguards in place, which led to maintenance personnel conducting high-power, run-up thrust procedures across the active taxiway and resulted in the loss of directional control of a light, single-engine airplane on the taxiway when it encountered a sudden, unexpected blast of engine thrust.

Factual narrative

The flight instructor of a light single-engine airplane reported that while he and the student pilot were on a taxiway under air traffic control (ATC) instruction, the airplane encountered prop wash, originating from a larger (four engine) turbine-powered airplane performing a maintenance engine(s) run-up. The maintenance run-up was performed in a location adjacent to the active taxiway that was authorized for parking as well as 80% engine(s) power run-ups. The larger turbine-powered airplane was the third in a row a five, of like model airplanes being parked at the location. The light single-engine airplane was not on frequency when the larger turbine-powered airplane was given the clearance, and was not told by ATC at any time during their taxi of the larger turbine-powered airplane's intentions. Subsequently, the light single-engine airplane was blown approximately 80 feet from its original location while taxing behind the larger turbine-powered airplane, which resulted in substantial damage to the firewall. The flight instructor reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. As a safety recommendation the flight instructor stated that the incident could have been prevented with better communications between the tower controllers and the larger turbine-powered airplane's ground personnel. The flight instructor of a light single-engine airplane reported that while he and the student pilot were on a taxiway under air traffic control (ATC) instruction, the airplane encountered prop wash, originating from a larger (four engine) turbine-powered airplane performing a maintenance engine(s) run-up. The maintenance run-up was performed in a location adjacent to the active taxiway that was authorized for parking as well as 80% engine(s) power run-ups. The larger turbine-powered airplane was the third in a row a five, of like model airplanes being parked at the location. The light single-engine airplane was not on frequency when the larger turbine-powered airplane was given the clearance, and was not told by ATC at any time during their taxi of the larger turbine-powered airplane's intentions. Subsequently, the light single-engine airplane was blown approximately 80 feet from its original location while taxing behind the larger turbine-powered airplane, which resulted in substantial damage to the firewall. The flight instructor reported that there were no pre impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. As a safety recommendation the flight instructor stated that the incident could have been prevented with better communications between the tower controllers and the larger turbine-powered airplane's ground personnel. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Attain/maintain not possible - C
  • C Organizational issues-Development-Design-Policy/procedure development-Airport - C

Verbatim from NTSB's published report. Source file NTSB_2016_GAA16CA442.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗