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Wrong POH, fuel exhaustion bring down Pipistrel

By NTSB · June 15, 2015 ·

The airline transport pilot, 64, who had logged more than 24,000 hours, volunteered to deliver the Pipistrel Alpha trainer from an airport in Indiana to a maintenance facility. He made the arrangements for the flight, including preflight planning.

A commercial pilot, 22, who had logged 388 hours, chose to ride along to gain flight experience and familiarity with the plane.

At the time of the accident, the ATP did not possess a valid medical certificate, as his last application had been denied. The commercial pilot did not know this at the time of the accident. Although the ATP was acting in the capacity of the pilot-in-command, because his medical certificate had been denied, he was not qualified to serve in this role.

After stopping to refuel, the airplane took off on the last leg of the cross-country flight that night. The airplane was not equipped or certified for night flight. The commercial pilot reported that, about 10 minutes from their destination, the fuel gauge was reading “close to empty.”

About five minutes later, the engine lost power, at which time the ATP took control of the airplane.

The pilots attempted to deploy the ballistic parachute just before the forced landing, however, due to the low altitude, it did not fully deploy. The airplane came down hard near Pampa, Texas, and the high surface winds dragged the airplane across rough and uneven terrain before it became entangled in a barbed wire fence. The ATP was killed, and the commercial pilot seriously injured. No fuel was found in the fuel pump or tank.

Investigators determined that the fuel capacity information in the Pilot’s Operating Handbook (POH) provided to the pilots and on the placard created by the ATP, which was based on the POH, was inaccurate. Although the manufacturer reported that it provided the correct POH to the owner when the airplane was delivered, the owner had the incorrect POH, and the investigation determined that several other owners of this airplane model had received the wrong POH upon delivery of their aircraft.

The POH indicated that the airplane had 15 gallons total fuel capacity and 14.5 gallons usable fuel capacity. However, the accident airplane’s actual total fuel capacity was 13.2 gallons and the usable fuel capacity was 12.7 gallons. The calculated fuel requirement for the accident leg of the flight would have been at least 13.2 gallons of fuel, so the engine stopped producing power due to fuel exhaustion.

Even if the fuel capacity information had been accurate, visual flight rules night flights require a 45-minute fuel reserve, and that would not have been met on the accident leg. The ATP did not properly calculate the flight’s fuel requirements. Further, he failed to adequately monitor the in-flight fuel consumption and recognize that the airplane was low on fuel.

In addition, the plane was not equipped to fly at night nor was it approved for night flight, yet the pilot planned the flight legs so that the airplane would be flying at night.

The NTSB determined the probable cause of the accident as the loss of engine power due to fuel exhaustion as a result of the manufacturer providing the incorrect Pilot’s Operating Handbook to the owner, which prevented the pilot from accurately calculating the fuel requirements before the flight. Contributing to the accident were the pilot’s inadequate preflight planning and poor decision-making.

NTSB Identification: CEN13FA338

This June 2015 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.
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About NTSB

The National Transportation Safety Board is an independent federal agency charged by Congress with investigating every civil aviation accident in the United States and significant events in the other modes of transportation, including railroad, transit, highway, marine, pipeline, and commercial space. It determines the probable causes of accidents and issues safety recommendations aimed at preventing future occurrences.

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Comments

  1. Pat says

    June 16, 2015 at 8:42 am

    Simple…..4 HUA’s….both pilots for their stunt and repeated poor judgement, the owner for agreeing to the night flights, and mfg for the wrong handbook. Goes to show that big hours doesn’t mean a thing, and every flight is a new test of abilities and equipment.

  2. Bluestar says

    June 16, 2015 at 6:18 am

    The ATP’s lack of medical had nothing to do with the accident, but lack of good judgement was bountiful in that cockpit. Between the both of them, experienced pilots they were hell bent on breaking the rules. Flying this aircraft at night was planned, probably for their excitement, unfortunately at a very high cost.

    • John says

      June 16, 2015 at 8:40 am

      Not so. The ATP was deceitful and medically unfit. This has everything to do with the outcome. The ATP failed to exercise due diligence in determining that the POH he/she used was appropriate for the aircraft. The ATP failed to adhere to the FARs with regard to night flight in an ill equipped aircraft. According to the NTSB Factual report “Dark night visual meteorological conditions prevailed at the time of the accident…” Further the ATP didn’t take even the rudimentary precaution of filing a VFR flight plan for this leg of the flight. He/she made the very poor decision to conduct night flight in an unfamiliar aircraft on a ferry flight over unknown terrain. The NTSB Factual report says the “accident site was located in hilly desert canyon terrain vegetated with short grass, sagebrush, and yucca plants…” Note that delayed deployment of the BRS until the aircraft was only “200-300 feet” over the terrain which was a PIC decision was directly related to the fatality of the unqualified PIC (the ATP), and the trusting (too trusting) 22 year old CP. The post accident toxicology report found a cocktail of drugs in the ATP’s tissues that were well beyond the “therapeutic” range in concentration. The responsibility for this accident is squarely upon the shoulders of the ATP. He clearly should not have been flying as PIC, and should have affirmatively disclosed his lack of a medical which was denied for numerous very good reasons. His decision to make the flight in the absence of a medical is quite likely a strong indicator that he had cognitive issues (perhaps relating to his reported depressio) which further precluded issuance… Cognitive issues were perhaps indicated by the many other deficiencies in the ATP’s decision making, including his over use of prescribed drugs.

      • Bluestar says

        June 16, 2015 at 11:37 am

        John, your dissertation was uplifting, but all you had to enlighten us on was your access and interpretation of the medical report which wasn’t included in this synopsis.
        Everything else was clearly spelled out, so my comment stands, between the two of them they were hell bent on breaking the rule. A 22 year old CP must have some degree of “common sense” !

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