Flight Details
Four minutes after takeoff on an instrument flight rules flight, while climbing to 4,000 feet, the pilot informed the departure controller of "instrument problems" and stated he wanted to stay VFR. The controller acknowledged. The pilot then contacted another departure controller, who instructed a climb to 8,000 feet. The pilot said he would climb after clearing a cloud, reiterating the instrument problem. The controller told him to advise when able to climb. About 30 seconds later, the pilot reported climbing to 8,000 feet, and shortly after, the controller cleared him to 11,000 feet, which the pilot acknowledged.
Communication with Controllers
Later, the pilot contacted a center controller, who advised moderate-to-heavy precipitation along his northbound route for the next 10 miles and allowed deviation left or right, with a direct-to intersection instruction. The pilot acknowledged. The controller then cleared a climb to 13,000 feet, which the pilot acknowledged. The pilot did not mention the instrument problem to the center controller. The airplane began turning east, completing about an 80-degree turn toward heavier precipitation. The controller instructed a climb to 15,000 feet, but the pilot did not respond. After two more queries, the pilot said he was trying to maintain VFR and had an instrument failure. The controller noted the airplane was turning east, which "looks like a very bad idea," and advised a turn west, but no further transmissions were received.
Radar and Weather Data
Radar showed the airplane climbing to 9,500 feet during the east turn, then descending to 7,500 feet over 24 seconds, and to 0 feet (ground level) within the next 5 seconds. The pilot recovered, climbing northeast-bound to 1,500 feet over 20 seconds. The airplane then likely stalled and descended northwest-bound into shallow waters of a wildlife refuge. Weather radar indicated the first descent occurred in moderate-to-heavy rain, the second in light rain. The nearest recording airport, about 20 nautical miles away, reported a ceiling of 1,500 feet, suggesting the pilot climbed back into IMC before losing control.
Investigation Findings
The investigation could not determine the extent of the pilot's flight planning. A flight plan was on file, but no formal weather briefing was obtained; self-briefing via alternative means was possible. It could not determine when the pilot lost situational awareness, though the excessive east turn toward heavier precipitation suggested it was likely unintentional and that awareness was already lost. Earlier, the departure controllers coordinated per procedures to keep the pilot low and out of IMC. After the pilot climbed without comment, the controller likely assumed the instrument problem was resolved and did not inform the center controller. The center controller provided weather advisories and deviation approval as required; the pilot did not request further assistance and only mentioned the instrument problem after being warned about worsening weather.
Autopsy results were minimal due to impact forces. FAA medical records showed no significant health issues for the 16,560-hour former military pilot; his wife was unaware of any preexisting conditions. The wreckage was extremely fractured, precluding thorough examination, but all flight control surfaces were accounted for and engines were under power at impact. The airplane had redundant flight instruments, instrument air sources, onboard weather radar, and a storm scope. The pilot did not specify the type or extent of the instrument problem, and the investigation could not determine which instruments failed or how redundancies could be simultaneously compromised. The pilot continued flight into IMC despite reported instrument problems, eventually losing situational awareness and control, regaining both when acquiring visual ground contact, then for unknown reasons climbing back into IMC, where he again lost awareness and control until impact.
Probable Cause
The pilot's loss of situational awareness, which resulted in an inadvertent aerodynamic stall/spin after he climbed the airplane back into IMC. Contributing to the accident was the pilot's improper decision to continue flight into IMC with malfunctioning flight instrument(s).