No fatalities

3 Aug 2009: PIPER PA-25-235 — Hoppe Air Service LLC — Royal, IA

Royal, IA, United States

On 3 Aug 2009, a PIPER PA-25-235 operated by Hoppe Air Service LLC was involved in an aviation accident near Royal, IA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain clearance from the crop during an aerial application maneuver. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

An aerial application pilot reported no mechanical malfunctions after his airplane descended into crops during a spray run, following a perceived loss of wing loading while leveling off 30 feet above the crop.

Incident Overview

An aerial application pilot was conducting a spraying operation when the airplane sustained substantial damage after descending into crops. The pilot, who was the sole occupant, reported no injuries. The accident occurred while the pilot was preparing to spray a field.

Flight Details

According to the pilot, the airplane was approximately 200 feet above ground level (AGL) and lined up about half a mile from the field intended for spraying. The pilot set a descent angle to clear powerlines. When the airplane was about 30 feet above the crop, the pilot began to level off and engaged the spray handle.

Pilot's Account

The pilot stated, "I felt the aircraft start to load the wings and then just give-way." Following this sensation, the airplane descended into the crops, resulting in substantial damage. The pilot explicitly reported no mechanical malfunctions with the airplane related to the flight.

Safety Recommendation

In his account, the pilot offered a safety recommendation suggesting that if a shallower approach angle had been used, or if the level-off maneuver had been started at a higher altitude, the accident may have been prevented.

Contributing factors

Causes

Altitude — Not attained/maintainedPilot

Other contributing factors

Response/compensation