Continued |
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The
first two ski C-130s arrived at Sondrestrom on March 20 and 21 with an
operational readiness date of April 1. The crews did not spend the 10-day period
between March 21 and April 1 "feeling out" the aircraft. Instead, the first
mission was flown on March 23 to locate the Dye 2 site and offload 10
contractor personnel to survey the area and equipment that had been in place
since the previous summer. An identical mission was flown to the Dye 3 site
the following day. A recommendation was made to the Commander of the 61st (by
Major Fitzwater) that he concentrate on training three of the most
experienced crews to the point that they could adequately evaluate weather,
snow and depth perception phenomena peculiar to ice cap operations. The
recommendation was not put into effect. In fact, Fitzwater complained, the
squadron flying training officer (one of the two instructor pilots) did not
even receive a supervised flight to the Ice Cap. Until a major accident
occurred, the majority of the pilots had only one supervised flight to each
site. The pilots were not given an opportunity to observe with a supervisor
the phenomenon mentioned previously; therefore, the pilots could not be
expected to adequately evaluate the snow conditions prior to landing. Other
recommendations made by Major Fitzwater were never put into effect. The
recommendations included: |
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a. |
Reduction
of the fuel load from 32,000 pounds for a 1.5 hour to 3-hour flight to a more
realistic figure to lower the aircraft's gross weight. |
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b. |
Scheduling
Major Fitzwater to make the initial flight of the day to each site for evaluation
of weather and snow conditions. |
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c. |
Placing
a supply of RATO bottles at each site to reduce take off runs under unusual
conditions |
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A
problem with the ski system operation soon became apparent on some aircraft. Frequently,
the main ski failed to remain in the completely extended position at all
gross weights and center-of-gravity locations. In some cases the skis would not remain extended even with the
cargo offloaded. To Major Fitzwater, that indicated a malfunction of the
hydraulic dump valves or the electrical system. However, at the insistence of
supervisory personnel of the 61st, the Lockheed Field Service Representative
contacted the company in Georgia via amateur radio for a possible solution to
the problem. In a few hours, Lockheed advised to increase the system
hydraulic pressure from 1535 psi to 2000 psi and the air charge from 1435 psi
to 1900 psi. That recommendation was made by Lockheed engineers who had no
knowledge of the rough snow conditions where the aircraft were operated. At
that time Major Fitzwater pointed out that the increased pressures would
practically eliminate any longitudinal shock absorbing for the main
skis. He was completely ignored and without approval from the Air Materiel
Command or the Air Research and Development Command the pressures were
raised. Two aircraft so configured were dispatched to Dye 3 (with
inexperienced crews) and upon landing each sustained major damage of a like
nature to the main skis. In both cases, the damage was failure of the aft
hydraulic actuator pinion at the point where it attached to the ski. That
permitted the ski to retract and in one case split a ski longitudinally. In
the other case the main ski was not damaged as extensively, however, there
was serious damage to the nose gear due to improper technique by the pilot to
maintain directional control. The nose gear traveled aft approximately 20
inches and ruptured a forward fuselage bulkhead. |
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