DEN04MA015

ARTCC asked the pilot of Airspur 8773 if he would be able to execute the VOR instrument approach. The pilot said he could, but he wanted to "hold for awhile to see if [the weather] gets a little better" [according to the METAR, visibility was 1.75 statute miles and there was a 200-foot overcast ceiling]. He was cleared to hold north of the VOR at 12,000 feet msl. While holding, the pilot filed the following PIREP indicating light rime icing. Shortly thereafter, he was cleared for the approach. Three witnesses saw the airplane on the downwind leg, just past midfield, at an estimated altitude of 500 feet. Shortly thereafter, one of them heard the engine "spool up to high power...[like reversing] the pitch of the propeller to slow down," and he thought the airplane had landed. Five witnesses said the airplane emerged from the overcast and banked "sharply to the left, then back to the right, then back to the left, then took a hard bank to the right," rolled inverted and struck the highway just south of the airport perimeter. The airplane slid down the embankment and out into a lake, becoming partially submerged. Witnesses said it was "snowing hard" and the highway was covered with 1 to 2 inches of slush. Wreckage examination revealed the flaps were down 30 degrees, the wing deice boots were "ribbed," and the inertial separator was open. According to the toxicological report, chlorpheniramine, desmethylsertraline, sertraline, and pseudoephedrine were detected in blood. In addition, chlorpheniramine, sertraline, phenylpropanolamine, and pseudoephedrine were detected in the urine. The urine also contained acetaminophen. Sertraline (trade name Zoloft) is a prescription antidepressant medication. According to the Guide for Aviation Medical Examiners, "The use of a psychotropic medication is considered disqualifying. This includes all... antidepressant drugs..." Chlorpheniramine is an over-the-counter sedating antihistamine used primarily for the treatment of allergies. Pseudophedrine (trade name Sudafed) is a decongestant. Acetaminophen (trade name Tylenol) is an over-the-counter pain-reliever and fever-reducer. According to Dr. Stanley R. Mohler's "Medication and Flying: A Pilot's Guide," the adverse side effects of chlorpheniramine include drowsiness, dizziness, and lessened coordination. The side effects of pseudophedrine are usually mild and infrequent, but may include sleepiness, dizziness, restlessness, headache, and perhaps some loss of coordination and alertness or confusion.

History of flight

On October 29, 2003, at 0854 mountain standard time, a Cessna 208B, N791FE, registered to Federal Express Corporation (hereinafter referred to as FedEx) of Memphis, Tennessee, and operated by Corporate Air, Inc., of Billings, Montana, as Airspur flight 8773, was destroyed when it impacted terrain and water during a circling approach to Yellowstone Regional Airport (COD), Cody, Wyoming. The airline transport certificated pilot, the sole occupant on board, was fatally injured. Instrument meteorological conditions (IMC) prevailed, and an instrument flight rules (IFR) flight plan had been filed for the nonscheduled domestic cargo flight being conducted under Title 14 Code of Federal Regulations (CFR) Part 135. The airplane departed Natrona County International Airport (CPR), Casper, Wyoming, approximately 0730.

According to Federal Aviation Administration (FAA) documents, at 0800, the Salt Lake City Air Route Traffic Control Center (ARTCC) asked the pilot of Airspur 8773 if he would be able to execute the VOR (Very high frequency Omnidirectional Radio Range) instrument approach to Cody. The pilot said he could, but he wanted to "hold for awhile to see if [the weather] gets a little better" [according to the 0815 COD METAR (Aviation Routine Weather Report), the visibility was 1.75 statute miles and there was a 200-foot overcast ceiling]. He was cleared to hold north of the Cody VOR at 12,000 feet msl. At 0814, the pilot filed the following PIREP (Pilot Report) with the Casper Automated Flight Service Station (AFSS): "Over Cody; 0814; 12,000 feet; Cessna 208; sky condition, IMC; temperature, minus 04 degrees Celsius (C); turbulence, light; icing, light rime." According to the Cody Unicom operator, the pilot contacted him approximately 0830 and asked for the weather conditions. He told him, "I can barely see Beacon Hill, and [the] last known ceiling was 300 feet. UPS diverted without attempt(ing the instrument approach). Can't make out any ceiling because snow is too thick."

At 0833, the pilot told the Salt Lake City ARTCC he would make one additional holding circuit, and asked for clearance for the VOR approach. If he had to make a missed approach, he said he would divert to Billings, Montana. ARTCC cleared the pilot for the approach, and told him to either cancel his IFR flight plan or report making a missed approach. There were no further communications between ARTCC and Airspur 8773. Recorded radar data from the National Track Analysis Program (NTAP) depicted the airplane approaching and holding at COD VOR. It also depicted the instrument approach. The last radar contact was at 0846:08 when the airplane was downwind and nearly abeam the departure end of runway 04. Three FedEx employees saw the airplane on the downwind leg for runway 04, just past midfield, at an estimated altitude of 500 feet). Shortly thereafter, one of them heard the engine "spool up to high power...[like reversing] the pitch of the propeller to slow down," and he thought the airplane had landed.

Ten witnesses submitted written statements and their locations were plotted on a chart. Several of these witness' observations were nearly identical. Witness 1 observed the airplane emerge from a 200 foot ceiling. "It was rocking very badly from side to side. [It] rocked 2 to 3 times before diving 100 to 150 feet onto the highway and skidding into the lake." Witness 2 saw the airplane "bank to the left then back to the right, then back to the left, then took a hard bank to the right. The cockpit of the plane and right wing hit the road...[and the airplane] slid into the lake on its back and landed approximately 30 feet into the water." Witness 3, who was sitting in her office, saw the airplane's "right wing go down sharply. It came back up and the left wing tipped down sharply. The left wing came up and the [air]plane flipped completely over." Witness 7 saw the airplane "waggle left and right, then roll upside down and...drop straight down." Witness 9 said the airplane "appeared to be trying to gain altitude but was shaky. I saw the wing dip to the right...and then to the left...then [it] flipped over to the right and landed upside down on the highway. It bounced and [slid] towards the lake." Witness 10 saw the airplane flying "low and slow (Witnesses 5 and 8 agreed that the airplane was flying "very low")...The plane was falling with its left wing towards the ground. It struck with the tip-bottom of the left wing and then the nose hit." Witness 4 said there were "no motor problems." Witness 5 said the engine was "cutting out and then accelerating." Witness 6 said "the change in the engine sound...[was] like an acceleration noise." Witness 8 said the "motor sounded good."

Personnel information

The pilot, age 37, held an airline transport pilot certificate with an airplane multiengine land rating, and commercial privileges in airplanes single engine land. He also held a flight instructor certificate with airplane single engine and instrument ratings. He held a second class airman's medical certificate, dated March 17, 2003, with the limitation, "Holder shall wear corrective lenses."

Three pilot logbooks --- covering the time periods from August 26, 1985 to January 16, 1989, January 18, 1989, to March 31, 1994, and April 4, 1994, to March 24, 2001, respectively --- were made available for NTSB for examination. The following total flight time (in hours) were recorded:

Airplane Single-Engine Land: 8,666.7

Airplane Multi-Engine Land: 1,219.8

Turbo-Prop: 4,623.5

Complex: 3,873.3

Night: 3,572.1

Actual Instrument: 1,143.0

Simulated Instrument (Hood): 113.0

Flight Simulator: 67.2

Cross Country: 8,718.9

Dual Received: 283.6

As Flight Instructor: 1,038.8

Total Time: 9,896.5

The pilot had logged no less than 4,640 hours in a Cessna 208. In the remarks section of his logbooks, he noted his icing experience in the Cessna 208, ranging from trace icing to over an inch of ice accumulation.

Corporate Air records indicated the pilot had logged 11,094 total flight hours, of which approximately 1,366 hours in the Cessna 208: 187 hours in the previous six months, 75 hours in the last 90 days, and 19 hours in the last 30 days. He had successfully completed a pilot proficiency check on April 16, 2003.

Aircraft information

N719FE (s/n 208B0289), a model 208B "Grand Caravan," was manufactured by the Cessna Aircraft Company in 1991, and delivered to Federal Express that December. It was equipped with a Pratt & Whitney PT6-114A free turbine engine (s/n PS 19166), rated at 675 horsepower, and a McCauley three-blade, constant-speed, full-feathering and reversible propeller.

The airplane was certificated for flight into known icing conditions. Deicing equipment included boots on the horizontal and vertical stabilizers, wing and wing struts, and cargo pod. Anti-icing equipment include heated pitot-static and stall warning systems, windshield and propeller.

The airplane was maintained under an Approved Aircraft Inspection Program (AAIP). The last inspection was on October 1, 2003. At that time, the airframe and engine had accrued 6,885.1 flight hours, 6,599 landings, and 5,833 engine cycles. The propeller had accrued 4,471.6 flight hours. The airplane had flown approximately 64 hours since this last inspection.

Meteorological information

The following METARs were recorded at COD at 0717, 0815, and 0855, respectively:

Wind, 360 degrees at 9 knots; visibility, 6 statute miles; ceiling, 800 feet overcast; temperature, 03 degrees C.; dew point, -02 degrees C.; altimeter setting, 29.38; remarks, light rain.

Wind, 350 degrees at 6 knots; visibility, 1-3/4 statute miles; ceiling, 200 feet broken, 300 feet overcast; temperature, 01 degree C.; dew point, -03 degrees C.; altimeter setting, 29.40; remarks, light snow.

Wind, calm; visibility, 1 statute mile; ceiling, 200 feet broken, 1,000 feet overcast; temperature, 01 degree C.; dew point, -02