I was in a pilot lounge at a heliport where an operator was giving sightseeing rides when a pilot returned to the loading area after getting fuel. The loaders brought out five passengers and I heard the pilot say over the radio that they put too much fuel onboard and he could only take four passengers. Right then another pilot who worked for the sightseeing operation jumped up and said, “No, don’t take the passenger back. I’ll do the flight.” He ran out and told the pilot he would take over so the pilot could take a break. As I watched the helicopter lift off, the guy standing next to me (who was not a pilot) said, “Now there goes a real pilot.” I looked at him waiting for him to crack a smile or give me some signal he was kidding. He was serious.
I have known helicopter pilots who don’t think too much about gross weight. If it can hover, it will fly fine they would say.
Case in point, according to the NTSB the pilot of a Bell 206L departing on a sightseeing flight on a hot summer day lifted the helicopter to a hover and started a takeoff run. The pilot said it felt like the helicopter did not have full power and it did not gain altitude as it neared the end of the heliport. The tail rotor struck the edge of the pier. The helicopter then hit the water, the pilot deployed the floats, and the helicopter rolled inverted.
When the pilot was questioned about the lack of engine power, he stated that sometimes dirt or dust could lodge in the fuel system and then dislodge from the impact. When asked if the helicopter was overweight, the pilot stated no, because he was able to hover with an indicated turbine outlet temperature (TOT) of 720C and 92-percent torque.
Regarding the helicopter’s weight and balance, the pilot stated that he did not ask passengers their weight and did not have a scale at the heliport. Rather, he estimated the weight and balance. For the accident flight, he estimated 150 lb. per person, as there were three male passengers and three female passengers. After the accident, an FAA inspector questioned the passengers about their weights. The passengers reported their weights as 132 lb., 176 lb., 187 lb., 207 lb., 210 lb., and 213 lb. In addition, the pilot weighed about 190 lb. Although the pilot estimated 150 lb. per passenger, the average weight of the passengers was approximately 188 lbs. Those passengers plus fuel made the helicopter about 250 lbs. over gross weight at the time of the accident, not including the weight of clothing, personal effects, and baggage.
The FAA puts the standard average weight for operators with a no-carry-on bag program to 184 lb. in the summer and 189 lb. in the winter.
Tags: Tim McAdams