Pilot Operates ‘Unairworthy’ Twin Cessna, Omits Critical Procedure - Fatal Crash

Over One Hundred Discrepancies

The FAA had already said no. More than once. Before N79HP, a Cessna 335, ever left the ground on 1 December 2018, the aircraft had accumulated over 100 documented maintenance discrepancies, and the FAA had repeatedly refused to issue a ferry permit that would have allowed it to be flown — even under restricted conditions — to a facility where those discrepancies could be addressed. The aircraft, by every official measure, was not airworthy. It flew anyway, out of Fort Lauderdale Executive Airport, with two people aboard. Neither survived.

White Smoke, Then a Turn Back

Shortly after liftoff, witnesses and the pilot's own radio calls describe white smoke coming from the left engine. The pilot reported an engine fire and began working to bring the aircraft back around for a return landing — the standard, correct response to an engine problem immediately after takeoff. But a twin-engine aircraft flying on one working engine needs the failed engine's propeller feathered — its blades turned edge-on to the airflow — to minimize the drag that a stopped or windmilling propeller otherwise creates. That didn't happen here.

A Propeller Left to Drag

With the left propeller unfeathered and the left engine producing only partial power at best, the Cessna 335 lost the climb performance it needed to clear the ground and terrain ahead of it. Unable to climb or maintain altitude, the aircraft struck a building shortly after the failed takeoff, and a post-impact fire followed. Both people aboard were killed.

What Was Actually Wrong With the Engine

Investigators examining the wreckage found severe detonation damage inside the left engine — the kind of internal damage caused by abnormal, uncontrolled combustion inside the cylinders rather than the smooth, controlled burn an engine is designed around. They also found the oil filler cap or gauge assembly had come loose or come off entirely, allowing oil to spray directly onto hot engine components — which is almost certainly what produced the visible white smoke the pilot and witnesses saw right after takeoff. The detonation damage and the oil loss together meant the left engine was never going to produce reliable power once the problem started, regardless of what the pilot did afterward.

Two Decisions, Compounding

The NTSB's investigation identified two separate, compounding failures in how this flight was conducted. The first was the decision to fly the aircraft at all — an airplane with more than 100 documented discrepancies and a paper trail of FAA refusals specifically because it wasn't considered safe to fly, even under the limited conditions a ferry permit would have allowed. The second was what happened once the emergency began: the failure to feather the propeller on the failed engine, a step that exists specifically to preserve what little climb performance remains on a single working engine, and one that wasn't executed here.

A Flight That Multiple Systems Tried to Prevent

What makes this accident distinct from an ordinary engine failure is how many separate points existed where it could have been prevented before the aircraft ever reached the runway. The maintenance discrepancies were documented, not hidden. The FAA had denied a ferry permit, not once but repeatedly, specifically because the aircraft wasn't considered safe to move even short distances under controlled conditions.

How a Ferry Permit System Is Supposed to Work

When an aircraft has documented maintenance discrepancies serious enough that it's no longer considered airworthy for normal operations, the FAA can issue a special ferry permit — a narrow, conditional authorization that allows the aircraft to be flown, typically under specific restrictions like limited altitude, no passengers, or daylight-only VFR conditions, but only for the specific purpose of relocating it to a facility where the discrepancies can actually be repaired.

What a Hundred Discrepancies Actually Represents

It's worth sitting with what "over 100 documented maintenance discrepancies" means in practical terms, because the number alone can obscure how serious that volume of unresolved issues typically is.

The Physical Evidence of Detonation

Detonation — abnormal, explosive combustion inside an engine cylinder rather than the smooth, controlled flame front a properly functioning engine relies on — leaves distinctive physical evidence that investigators can identify during a post-accident teardown: pitting and erosion on piston crowns, cracked or damaged cylinder heads, and other telltale signs of combustion pressures and temperatures well beyond what the engine was designed to handle.

Why Feathering Is Taught as Automatic, Not Optional

Multi-engine pilot training treats propeller feathering after an engine failure as one of the small number of truly non-negotiable memory items — steps drilled to the point of near-automatic response, precisely because the seconds immediately after an engine failure on takeoff or initial climb leave almost no time for hesitation or deliberation.

Two Failures That Didn't Need to Compound

What makes this accident particularly difficult to read is how independently avoidable each of its two central failures was.