What Happened
On November 7, 2017, just after noon eastern standard time, an Icon Aircraft A5 amphibious light sport airplane, N922BA, went into the water off the Gulf Coast near Clearwater, Florida. The private pilot was the sole occupant. He did not survive. The wreckage came to rest inverted in about 4 feet of water, and what the NTSB found inside the cockpit, and inside the pilot, told a story that had been building for weeks.
The pilot had taken delivery of the A5 roughly four weeks earlier. He had 14.5 total hours in the airplane. He departed Island Ford Lake in Odessa, Florida, at approximately 1147 local time. The Icon’s onboard digital-to-analog data memory unit recorded every second of what followed. The airplane climbed to a GPS altitude of 1,909 feet, flew north for 4 nautical miles, then turned west toward the Gulf of Mexico. Over the next 10 nautical miles, the airplane descended to about 600 feet and continued toward the shoreline. It then turned south, flying along the coast at altitudes ranging from essentially zero to a few hundred feet.
Multiple witnesses along the shoreline watched the airplane. A commercial fisherman said it flew over his vessel at less than 300 feet. Another fisherman, positioned about 900 feet north of where the airplane would eventually hit the water, watched it fly past heading south, descend briefly, then climb steeply. He described the engine as sounding normal throughout. Witnesses reported seeing steep turns, high-pitch climbs reaching around 500 feet, and the airplane maneuvering close to houses along the shore. One witness photographed the airplane over the water just before the crash.
During the last 2.5 minutes of the flight, the Icon’s data recorder captured three distinct maneuvers. The first, at 1201:19, was a rapid climbing S-turn from GPS altitude zero to 134 feet, then back down to 36 feet. The airplane hit a maximum load factor of 1.94 Gs and a maximum angle of attack of 7.53 degrees. The second maneuver began at 1202:29: a climbing right 360-degree turn from 19 feet to 136 feet. Load factor reached 1.93 Gs, and the angle of attack peaked at 15.73 degrees, which is inside the red band on the AOA indicator. That indicator is color-coded: green means the wing is working lightly, yellow means it is working harder, and the red band begins at 15.6 degrees, the point where aerodynamic lift begins to degrade. At 15.73 degrees, the wing was past that threshold.
The third and final maneuver began at 1203:34. The airplane was at 210 feet GPS altitude, doing 81 knots, and the pilot initiated another climbing right turn. Load factor jumped to 1.91 Gs. Then, about 3 seconds into the climb, the throttle lever moved from 99 percent to 27 percent. Engine speed fell from approximately 5,393 rpm down to 2,261 rpm. The airplane climbed to a GPS altitude of 358 feet, the apex of the maneuver, with an indicated airspeed of 54 knots, a computed bank angle exceeding 50 degrees, and a computed pitch angle exceeding 30 degrees. The AOA had climbed steadily to 15 degrees, sitting at the top of the yellow band. The last recorded data point, at 1203:41, showed 75 knots and a heading of 354 degrees. Two seconds later, the engine control unit recorded 2,829 rpm and a throttle position of 27 percent.
The fisherman 900 feet away watched the airplane enter the steep climb and then descend nose-down to the east. He said the pitch attitude decreased as the airplane continued down. It hit the water at a 45-degree nose-down, wings-level attitude.
Investigation Findings
Postaccident examination of the airframe and engine found no preexisting mechanical failures. Investigators manually rotated the engine at the propeller and established continuity and compression on each cylinder. Control continuity was confirmed from the cockpit to the elevator, ailerons, and rudder. Both wings were locked in place. The separations found in the control system were consistent with overload forces from the impact, not a preflight or in-flight failure. The wreckage pattern told its own story: the front fuselage and cockpit were highly fragmented, with pieces scattered within a 300-foot radius of the main wreckage. The symmetrical fragmentation of both wings and the nose section was consistent with a wings-level impact at a steep nose-down angle, which matched what the witness described.
The ballistic complete aircraft parachute system was not deployed. The cockpit handle pin was still in its installed position. The Icon’s pilot operating handbook, section 4.3, includes an After Cockpit Entry checklist step to remove and stow that safety pin before flight so the system can be activated immediately in an emergency. The pin was still in. The parachute system could not have been used, even if the pilot had tried. The handbook notes that optimal CAP actuation is from level flight above 500 feet AGL, but also states there are no restrictions on its use. At 358 feet, in a steep bank, at 54 knots, the airplane was below optimal altitude, but the system was categorically unavailable because of the unpulled pin.
Ten feather samples were recovered from the wreckage and sent to the Smithsonian Institution Feather Identification Laboratory. Two of the ten contained feathers. No avian DNA was present in any sample, and there was no impact damage consistent with a bird strike in the areas where the feathers were found. Bird ingestion was ruled out.
The toxicology findings were the most significant part of the investigation. The FAA Forensic Sciences Laboratory identified five psychoactive substances in the pilot’s specimens. Zolpidem, a prescription sleep aid, was found in cardiac blood at 0.088 µg/ml. Amphetamine was found at 2.2 µg/ml in cardiac blood. To put that number in context, a single 30-mg oral dose produces early blood levels averaging 0.111 µg/ml. Levels above 0.2 µg/ml are generally considered indicative of misuse to maximize the drug’s psychoactive effects. The level found was ten times the therapeutic single-dose average. Morphine was present at 0.192 µg/ml in cardiac blood, above the typical therapeutic range of 0.010 to 0.100 µg/ml. Fluoxetine and its metabolite norfluoxetine were found at 0.984 and 1.569 µg/ml respectively. Baclofen, a muscle relaxant carrying warnings about sedation and additive CNS effects, was present at 0.72 µg/ml. Hydromorphone was found in urine. No ethanol was detected. Available medical records showed a history of substance abuse requiring inpatient rehabilitation twice between 2013 and early 2015, along with diagnoses of chronic back pain, insomnia, and depression.
The data recorder also told investigators something about the pilot’s behavior in the weeks before the accident. GPS data confirmed that on October 26, 2017, twelve days before the crash, the pilot flew under the Sunshine Skyway Bridge, which has a 180-foot vertical clearance over the water. He logged that flight in his logbook. Seven days before the crash, he posted on social media that flying the Icon A5 over water was “like flying a fighter jet.” On October 23, 2017, Icon Aircraft had issued a document titled “Low Altitude Flying Guidelines” to all A5 owners, including the accident pilot. The company’s CEO stated he was certain the pilot received and reviewed it. That document warned pilots explicitly: “Do not show off.” It also specified maneuvering limits below a 300-foot soft deck of plus or minus 45 degrees of bank and plus or minus 10 degrees of pitch.
NTSB Probable Cause
The pilot’s improper decision to perform aggressive, low-altitude maneuvers due to his impairment from the use of multiple psychoactive substances, which resulted in a loss of control.
Safety Lessons
Several things were working against this pilot simultaneously, and any one of them in isolation might have been survivable. Together, they were not. There are three things worth sitting with here.
- Low altitude is a one-way energy street. The Icon’s own operations manual spelled this out directly: at low altitude, your energy state is almost entirely your airspeed. You cannot trade altitude for airspeed when you have no altitude to trade. The pilot reduced throttle to 27 percent at the apex of a maneuver that put him at 358 feet, 54 knots, 50 degrees of bank, and 30 degrees of nose-up pitch. That is four compounding energy problems at once. Any one of them at that altitude demands immediate, correct action. The combination left no margin for impaired reaction time.
- Pre-flight checklists exist for the moments you need them most. The complete aircraft parachute system was the designed emergency response to exactly this scenario. The handbook makes that explicit. It also makes the preflight pin removal step explicit, in the After Cockpit Entry checklist, precisely because the moment of loss of control is not the moment to discover the pin is still installed. Skipping that step did not cause the accident. But it eliminated the only remaining option once control was lost.
- Psychoactive substance combinations are not additive, they are multiplicative. Five substances were present simultaneously in this pilot, each carrying its own warning about cognitive and psychomotor impairment. The NTSB noted that the combined effects of all five have not been studied together because studying that combination in humans would be ethically prohibited. What is known is that each substance alone carries warnings about operating hazardous machinery, and several carry explicit warnings about additive CNS depression when combined with other depressants. Zolpidem plus morphine plus baclofen plus amphetamine plus fluoxetine is not a five-drug problem. The FAA’s standard for medical certification exists because judgment is the first thing impaired and the last thing the impaired person notices is gone.
Frequently Asked Questions
Q: What caused the Icon A5 to crash near Clearwater in 2017?
A: The NTSB determined the probable cause was the pilot’s decision to perform aggressive low-altitude maneuvers while impaired by multiple psychoactive substances, including amphetamine, zolpidem, morphine, fluoxetine, and baclofen. During the final maneuver, the pilot reduced throttle near the apex of a steep climbing turn at 358 feet, leaving the airplane at 54 knots with more than 50 degrees of bank and insufficient energy to recover.
Q: Did the Icon A5’s ballistic parachute system deploy in this accident?
A: No. The complete aircraft parachute system was not deployed. Investigators found the cockpit handle safety pin was still installed, which would have prevented deployment. The Icon’s After Cockpit Entry checklist includes a step to remove and stow that pin before flight. The pilot had not completed that step. The POH’s emergency procedure for loss of control is to pull the CAP handle, but the pin made that option unavailable.
Q: How experienced was the pilot in the Icon A5?
A: The pilot had 14.5 total hours in the accident airplane. He had taken delivery of it approximately four weeks before the crash. GPS data and logbook entries showed that within those four weeks he had flown under the Sunshine Skyway Bridge, which has 180 feet of vertical clearance over the water, and had posted on social media that flying the A5 over water felt like flying a fighter jet.
Q: What drugs were found in the Icon A5 pilot’s system?
A: FAA toxicology identified zolpidem (0.088 µg/ml), amphetamine (2.2 µg/ml), morphine (0.192 µg/ml), fluoxetine (0.984 µg/ml) and its metabolite norfluoxetine (1.569 µg/ml), and baclofen (0.72 µg/ml) in cardiac blood. Hydromorphone was found in urine. The amphetamine level was more than ten times the average blood level produced by a single therapeutic dose and well above the 0.2 µg/ml threshold associated with misuse. No ethanol was detected.
Q: What are the low-altitude maneuvering limits for the Icon A5?
A: Icon Aircraft issued Low Altitude Flying Guidelines in October 2017 that specified a “soft deck” at approximately 300 feet AGL. Above that altitude, normal non-aerobatic maneuvering up to plus or minus 60 degrees of bank and plus or minus 30 degrees of pitch was permitted. Below that soft deck, the guidelines called for benign maneuvering limited to plus or minus 45 degrees of bank and plus or minus 10 degrees of pitch. During the accident sequence, the pilot was below 360 feet with more than 50 degrees of bank and more than 30 degrees of pitch.
