Showing posts with label loss of control. Show all posts
Showing posts with label loss of control. Show all posts

Wednesday, April 16, 2008

March 2008 Aircraft Accidents and Incidents - Part I

Hi Readers: There was a total of 64 accidents/Incidents for March 2008 as reported by NTSB (National Transportation Safety Board). As of 4-16-08 the 19th and 23rd were unreported. There were 5 incidents, 15 fatal accidents with 35 fatalities, and 43 nonfatal accidents. There were 3 non-U.S. accidents, one public-use accident, 4 Part 137 accidents, 4 Part 135 accidents, 3 Part 121 accidents, and 49 accidents classified as GA accidents.


There were 7 helicopter accidents reported, the most serious accident (10 fatal) occurring 10 miles west of Santa Cruz, Peru when a Bell 412 EP, piloted by a U.S. certified air transport pilot and a peruvian provisional copilot, impacted mountainous terrain. There were two other Bell 206B accidents, one (2 minor injuries) in Alaska colliding with terrain - an aerial photography flight involving a loss of control while covering a dogsled race; the other, an agriculture flight, the skids contacting a field while spraying. There were 2 Robinson R22 helicopter accidents, one fatal - a combination photo and student training lesson, when the helicopter was observed to shed parts at low altitude and impact the ground. The tail cone had separated from the fuselage at a "right angle" and the main rotor blades exhibited "coning". Also, one of the main rotor blade sections exhibited an impression consistent in shape to the leading edge of the vertical stabilizer. Examination of the instrument panel revealed that the engine rpm needle was in a high limit position and the rotor rpm needle was in a low limit position. The pilot was properly rated for the flight. The other Robinson helicopter impacted terrain following a loss of engine power at 300 feet during a practice 180-degree autorotation at the Las Vegas, NM. airport following a flight from Broomfield, CO. There were no injuries. On March 9th a Sikorsky helicopter impacted a coal mound during a forced landing near Belmont, WV. The certified commercial pilot was seriously injured. The purpose of the flight was to remove construction equipment from a 620-ft tall powerplant smokestack. After 5 loads were removed successfully, the pilot refueled the helicopter and returned to pick up the sixth and final load. After lifting clear of the stack, the pilot noted that the calibrated load meter read 5,200# - an overload condition. Seconds later the pilot felt a high frequency vibration, which was followed by a yaw to the right and separation of the tail rotor assembly. After two 360-degree rotations, the pilot released the load, reduced the collective pitch and performed an autorotation. The helicopter sustained substantial damage during the hard landing. The 7th helicopter accident involved a Willey Rotorway Exec 90 flight to practice autorotation and simulated SE failures. After 45 minutes of flight both the Instructor and the Student noted that the engine tachometer read lower than the rotor tachometer. Assuming a following engine failure, an autorotation was made. The helicopter landed in soft terrain and rolled on its side.


There were 5 incidents - none sustaining injury. One, a Southwest Airlines B-737, Flight 411, collided, during taxi, with Southwest's B-737, Flight 15, during ground operations at Love Field, Dallas, TX. Both airplanes were damaged. While taxiing past flight 15 (stationary), the left winglet of Flight 411 contacted the left wing stabilizer of Flight 15. A Continental Airlines B-737 sustained minor damage when all four landing gear tires blew on touchdown at Houston, TX. Sounds like a very hard landing. A B-747 wet-leased to Saudia Arabian Airlines by Air Atlantic Icelandic experienced a fire in the the No. 3 engine pylon during the landing rollout at Dhaka, Bangladesh. On March 14th a UK Cessna 550 Citation experienced control problems in flight and landed at Edinburgh, Scotland for investigation - the flight originating in Spain. On March 26th a Great Lakes Aviation Raytheon 1900 D, operating as Flight 5187, en route to Farmington, NM., experienced an open cargo door after takeoff from Page, AZ.


There were 3 Alaskian accidents; one, a Cessna 185 ski-equipped airplane, which aborted the takeoff because the snow would not release from the skis. The airplane slid off the end of the runway and down an embankment at Takoti, Alaska. Another, a Bell 206B collided with terrain following loss of control whil maneuvering 59 miles SE of Nikolia, Alaska on a phot4o flight. The third accident occurred when a Stinson 108 rolled to the left on takeoff, struck the runway and nosed over. An inspection revealed that the ailerron control cables were misrouted, the direction of movement indicated in reverse.


The 4 Part 137 accidents involved agriculture operations and were minor, and a matter of pilot judgment.


The fatal accidents, as well as the nonfatal accidents, involved X-C flights, day and night, weather, an inflight breakup, and using the wrong fuel. All of these accidents will be covered in detail in Part II.


Thanks for listening. R.S.

Saturday, December 15, 2007

November 2007 Aircraft accidents/Incidents

Hi Readers: There were 65 accidents and two incidents for November 2007 as reported by NTSB (No accidents were reported for 11-17, 11-19, 11-24, 11-26, 11-29, and 11-30). The 65 accidents and the two incidents occurred in the Continental U.S., and 3 accidents occurred in foreign countries. There were 26 fatal accidents accounting for 52 fatalities (the 3 foreign accidents accounted for 9 fatalities). Alaska squeezed by this time with one Cessna non-fatal accident, with 2 serious injuries - an instruction flight, striking trees on an approach during dark night conditions. One incident involved a Delta Air Lines B-737 sustaining minor damage when the tire tread on the right outboard wheel separated and struck the airplane during takeoff from Phoenix Sky Harbor airport. The other, a UPS Douglas DC-8, experienced smoke in the cockpit from the lavatory area.

There was one mid-air collision - a Cessna 182A and an American Champion7GCBC collided at 1,500 ft msl over commencement Bay, Tacoma, Wa., the C-182A severing the Champions vertical stabilizer from above, the Champion then losing directional control and crash landing in the Bay. The Cessna landed successfuly. A taxiway collision occurred when a Cessna 208B collided with a Beech 18S at Opa LOcka, Fl. Both, cargo flights were taxiing to a refueling farm, neither pilot seeing the other airplane.

There were 5 non-injury and one fatal Helicopter accidents - a Bell 206A hard landing on a post-annual flight check, a Bell 222 when a wind gust forced the main rotor blade into the left vertical stabilizer fin and tail boom during engine start, a Hiller UH-12E involving inflight separation of a control rotor during an aerial application flight, a Robinson 22B touchdown in a left yaw during an instruction flight, and a Roloway Exec 162F impacted terrain in an emergency following a high frequency vibration in the main rotor blades. All incurred substantial damage. The fatal accident occurred when a Hughes 269C impacted the terrain, killing the pilot.

Once again the fatal accidents fuel the safety bin, indicating what we'll have to work on to prevent aircraft accidents. Taking the foreign accidents first, a Brazilian Learjet 35A crashed in a residential area of Sao Paula after takeoff, in daylight, incurring fatal injuries to the crew and 6 individuals on the ground, as well as 2 injuries on the ground. A French registered Piper PA-32R impacted terrain in daylight, under unknown circumstances, killing the pilot. A registered Mexican Cessna 208B experienced a forced landing following a loss of power on climbout. The Commercial pilot and two passengers were seriously injured, while 12 others sustained minor injuries.

There were 9 accidents involving the Cessna aircraft. An airline transport pilot departed Redding, Ca. on a day business x-c flight in a Cessna 340, 55 minutes later seen climbing out of a fog layer, heading into rapidly rising terrain at full power, clipping the tops of trees and impacting terrain. The pilot and two passengers recived fatal injuries. A Civil Air Patrol Cessna T182T was destroyed when impacting mountainous terrain at 7,200 ft msl below Mt. Potosi (8,514 ft msl) 24 miles SW of Las Vegas on a x-c flight to Rosamond, Ca. Both air transport pilots were fatally injured. VFR dark night conditions prevailed. A Cessna T210, on a night x-c flight, struck power lines on approach to R/W 19R to Jones airport near Tulsa, Ok. The weather was VFR, and an electrical problem was indicated. The pilot received serious injury, and the two passengers were fatal.

On a local instructional flight in VFR conditions, an instructor and student flying a Cessna 172N impacted terrain inverted, 90 degrees nose-down - witnesses indicated a possible engine problem. Injuries were fatal to both. A witness reported seeing a Cessna 177 impact the ground in a nose-down attitude near Auburn, CA. in daylight VFR conditions. The aircraft had been rented from an aviation club. The pilot and the passenger were fatally injured. Another impact with terrain was reported - a Cessna A150K loss of control during initial takeoff from R/W 35 at Mesquite airport in Texas - a local day flight. The pilot, an IP, and a passenger received fatal injuries. A witness saw the airplane enter a spin following folowing a nose-low steep turn. Another Cessna 172, piloted by a private certificated pilot, impacted terrain near Gladinar, Michigan, in day VFR conditions. The airplane was seen maneuvering at low altitude and descending nose-down into trees. And yet another Cessna 182Q was destroyed when it impacted trees and terrain while maneuvering on a pipeline patrol flight, in daylight conditions, near Farmerville, Louisiana - the pilot was killed. A 2-serious injury accident was reported near Palmer, Alaska, when an Instructor and student in a Cessna 150 struck trees on the approach to R/W 34 during dark night conditions. The 9 fatal Cessna accidents, primarily loss of control and/or critical judgment factors appear as a result of multiple causes. We'll await the final determinations made by NTSB for these accidents.

There were 3 Amateur-built fatal aircraft accidents during the period, one a Vans RV-10 aircraft, one a Herink Challenger II, and one a Blondin 601 HDS. All three impacted terrain in day VFR weather conditions. Another experimental home-built airplane, a Kewlly FID, crashed in a flat spin near Reno, Nevada, in daylight VFR conditions. The Commercial pilot sustained fatal injuries. And another experimental light sport airplane, operating under a special airworthiness certificate, a Zodiac 601 XC, collided with terrain near La Rille, Missouri. The airplane was seen rolling into a vertical descent following a left turn.

There was one Amateur-built helium balloon, a Padelt PG 37-1, that collided with power lines in Hampton, Iowa. The Commercial pilot and one passenger were fatally injured. The surviving passenger reported that a gust of wind pushed the balloon into a high tension power line. This, of course, is the principal hazard of the sport of balloon flying - you go where the wind blows and try to avoid the gusts.

The amateur-built aircraft accidents indicated low-time pilots, and some erratic flying at low altitude in VFR weather conditions. The amateur-experimental type aircraft requires a specific and special airworthiness certificate under FAR 21.191 (g), which includes air racing, kit-built aircraft, and light sport aircraft. The special airworthiness certificate, a study in itself, applies to the less complicated flying, but yet not without hazards. The experimental, amateur-built, and sport flying seems to be on the increase, and should be viewed in the same safety light as all other flying.

The subject of Airworthiness, very important, is simply aircraft being fit for flight, and will be discussed in detail at a later date.

Thanks for listening. R.S.