NTSB CAROL · Event
Event MIA91FA172
Aircraft involved
Probable cause & findings
THE PILOT IN COMMANDS FAILURE TO FOLLOW EMERGENCY PROCEDURES AND HIS FAILURE TO MAINTAIN AIRSPEED FOLLOWING LOSS OF POWER IN ONE ENGINE RESULTING IN AN INADVERTENT STALL AND THE INFLIGHT LOSS OF CONTROL WITH SUBSEQUENT INFLIGHT COLLISION WITH AN OBJECT AND THE TERRAIN DURING AN UNCONTROLLED DESCENT.
Factual narrative
PILOT STATED LEFT ENGINE LOST POWER FOLLOWED BY THE RIGHT ENGINE. HE INITIATED A LEFT TURN BACK TO THE AIRPORT BUT DID NOT SHUTDOWN ENGINES IN ACCORDANCE WITH EMERGENCY PROCEDURES. THE ACFT YAWED LEFT AND FELL OFF ON THE LEFT WING AS IF IT HAD STALLED. HE REGAINED PARTIAL CONTROL AND AIMED FOR A STREET. ACFT HIT ROOF OF HOUSE WHILE IN RIGHT BANK AND THEN CARTWHEELED ACROSS THE STREET. LEFT ENGINE WAS FOUND TO HAVE SEVERE DETONATION DAMAGE AND THE TURBOCHARGER WASTE GATE DOOR WAS MISSING ANTIVIBRATION SPRING. THE PIN CONNECTING THE DOOR AND ACTUATOR WAS FAILED. EVIDENCE INDICATED PIN HAD FAILED PRIOR TO ACCIDENT FLIGHT. SOOT INSIDE LEFT WASTEGATE INDICATED DOOR HAD BEEN FULLY CLOSED FOR SOMETIME. NO EVIDENCE TO INDICATE FAILURE OR MALFUNCTION OF THE RIGHT ENGINE WAS FOUND AND RIGHT PROPELLER SHOWED DAMAGE INDICATIVE OF ROTATION UNDER POWER AT GROUND IMPACT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1991_MIA91FA172.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Semantic Scholar 2016 · Article (Interacción)
Trajectory Recovery System: Angle of Attack Guidance for Inflight Loss of Control
This paper describes the design and development of an ecological display to aid pilots in the recovery of an In-Flight Loss of Control event due to a Stall (ILOC-S).
- NTSB Aircraft Accident Reports 2010 · Accident report
Loss of Control on Approach — Colgan Air Flight 3407
Colgan Air 3407 / Continental Connection (Q400) Buffalo NY, February 12, 2009 — 50 fatalities. Definitive investigation of the Colgan 3407 stall-stick-pusher crash on approach to Buffalo.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- arXiv 2025 · arXiv preprint
Quadratic Programming Approach to Flight Envelope Protection Using Control Barrier Functions
Ensuring the safe operation of aerospace systems within their prescribed flight envelope is a fundamental requirement for modern flight control systems.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
Browse the full corpus — academia portal ↗