Accident Overview
On March 4, 2011, about 0400 central standard time, a Learjet 25D, registration XA-TWH, was substantially damaged when it impacted obstructions while landing at William P. Hobby Airport (HOU), Houston, Texas. The airplane was operated by Personas y Paquetes Por Aire, S.A. de C.V. as a foreign air carrier air ambulance flight under 14 Code of Federal Regulations Part 129. It was registered to Grupo Desarrollador Mares del Pacifico, S.A. de C.V. The two pilots, two medical crewmembers, and two passengers were not injured.
Flight History
The flight originated about 0140 from Angel Albino Corzo International Airport (MMTG) in Tuxtla Gutiérrez, Chiapas, México. Night instrument meteorological conditions prevailed and an instrument flight rules flight plan was filed. During the landing on runway 12R, the airplane exited the southeast end of the runway, struck, and damaged the instrument landing system (ILS) localizer antenna system. The airplane continued traveling about 1,000 feet past the end of the runway and came to rest upright in a flat grassy area.
Weather Conditions
A review of recorded data from the HOU automated weather observation station revealed conditions at 0353: wind from 200 degrees at 3 knots, visibility of 3/4 mile in mist, an indefinite ceiling at 200 feet, temperature of 19 degrees Celsius, dew point of 18 degrees Celsius, and an altimeter setting of 29.90 inches of Mercury.
Pilot Statements
Both the pilot and co-pilot stated that due to the fog and low visibility they could not see the far end of the runway and flared the airplane too high. After landing long on the runway, the pilot said he applied maximum braking and reverse thrust but could not stop the airplane before colliding with the ILS antenna system.
Operator Statement
The operator reported that there was no mechanical malfunction or failure. The operator stated that the decision not to delay the flight and to land in marginal conditions was influenced by medical considerations for the passenger, who needed immediate specialized medical treatment.