Zone

Crash of a Beechcraft B100 King Air 100 in Benavides: 4 killed

Date & Time: Oct 26, 2009 at 1143 LT
Type of aircraft:
Registration:
N729MS
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Uvalde - Leesburg
MSN:
BE-2
YOM:
1976
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Captain / Total flying hours:
550
Circumstances:
The pilot obtained three weather briefings before departure. At that time, the current weather along the route of flight showed significant convective activity and a moving squall line, and the forecast predicted significant thunderstorm activity along the planned route of flight. The pilot was concerned about the weather and mentioned that he would be looking for "holes" in the weather to maneuver around via the use of his on-board weather radar. He decided to fly a route further south to avoid the severe weather. Radar data indicates that, after departure, the pilot flew a southerly course that was west of the severe weather before he asked air traffic control for a 150-degree heading that would direct him toward a "hole" in the weather. A controller, who said he also saw a "hole" in the weather, told the pilot to fly a 120-degree heading and proceed direct to a fix along his route of flight. The airplane flew into a line of very heavy to intense thunderstorms during cruise flight at 25,000 feet before the airplane began to lose altitude and reverse course. The airplane then entered a rapid descent, broke up in flight, and subsequently impacted terrain. Review of recorded precipitation data showed that there was substantial information available to the controller about moderate to extreme weather along the aircraft’s route of flight. While the controller stated that he saw a hole or clear area ahead of the aircraft, this is contradicted by both the recorded data and the statement of a second controller working the D-position at the time of the accident. The first controller did not advise the pilot of the severe weather that was along this new course heading and the pilot entered severe weather and began to lose altitude. The controller queried the pilot about his altitude loss and the pilot mentioned that they had gotten into some "pretty good turbulence." This was the last communication from the pilot before the airplane disappeared from radar. Review of recorded precipitation data showed that there was substantial information available to the controller about moderate to extreme
weather along the aircraft’s route of flight. The controller did not provide advisories to the pilot regarding the adverse weather's immediate safety hazard to the accident flight as required by Federal Aviation Administration Order 7110.65. Examination of the recovered sections of flight control surfaces revealed that all of the fractures examined exhibited signs consistent with overstress failure. There was no evidence of preexisting cracking on any of the fracture surfaces examined and no preaccident anomalies were noted with the engines.
Probable cause:
The pilot's failure to avoid severe weather, and the air traffic controller's failure to provide adverse weather avoidance assistance, as required by Federal Aviation Administration directives, both of which led to the airplane's encounter with a severe thunderstorm and the subsequent loss of control and inflight breakup of the airplane.
Final Report:

Crash of a Cessna 340 in Benavides: 2 killed

Date & Time: Dec 16, 1982 at 1830 LT
Type of aircraft:
Registration:
N5906M
Flight Type:
Survivors:
No
Schedule:
Guadalajara - Benavides
MSN:
340-0064
YOM:
1972
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
579
Circumstances:
A deer hunter saw the aircraft on a final approach to an open field at dusk, with the gear and flaps down. He stated that when it was at about 100 feet agl, the nose pitched down and the plane struck the ground and burst into flames. The aircraft was loaded with an estimated 600 lbs of marijuana, most of which was consumed by fire. A high altitude navigational chart was found near the wreckage. The chart contained a line between two navigational points (one in mexico and one in the united states). The aircraft had been stolen. Both occupants were killed.
Probable cause:
Occurrence #1: loss of control - in flight
Phase of operation: approach - VFR pattern - final approach
Findings
1. Stolen aircraft/unauthorized use - performed - pilot in command
2. (f) light condition - dusk
3. (c) airspeed - not maintained - pilot in command
4. (c) stall - inadvertent - pilot in command
----------
Occurrence #2: in flight collision with terrain/water
Phase of operation: descent - uncontrolled
Final Report: