Page:CAB Accident Report, AAXICO Logair Flight 1416B.pdf/5

- 5 - {| class="wikitable" ! Position !! Serial No. !! Time Since Overhaul !! Total Time
 * 1 || 34250|| 1753:40|| 20,841:31
 * 2 || 27438 || 294:38 || 35,507:13
 * 3 || 32306 || 1285:15 || 15,851:51
 * 4 || 30888 || 1258:46 || 30,532:56
 * }
 * 3 || 32306 || 1285:15 || 15,851:51
 * 4 || 30888 || 1258:46 || 30,532:56
 * }
 * }

The engines powered Hamilton Standard 43A60 propellers.

The gross weight and center of gravity were within prescribed operating limits at the time of the accident.

1.7 Meteorological Information

Prior to departure from Tinker AFB the captain was briefed by an Air Force weather forecaster on conditions to be expected. The briefing included Military Weather Warning Advisory No. 69 which was issued by the Air Force Severe Weather Center at Kansas City at 1800 on May 17, 1965. This warning advisory predicted a few thunderstorms with southeast to south gusts of 30 knots from 0600 to 1100 for May 18, 1965, over eastern Oklahoma, extreme southeastern Kansas and a portion of western Missouri which included Whiteman AFB. The written terminal forecast procided by the forecaster at Tinker AFB for the flight's expected time of arrival at Whiteman AFB was: 25,000 feet acattered, visibility 15 miles, wind 210 degrees 10 knots, altimeter setting 29,77 inches. This forecast was valid from 0430 to 0630. The forecaster stated that he briefed the pilot that the Whiteman AFB forecast called for intermittent ceilings of 3,000 feet, visibility 5 miles, thunderstorms, rain showers and hail, and variable gusty winds beginning at 0600. He did not enter this forecast on the DD Form 175-1, Flight Weather Briefing form.

The Kansas City radar weather observation made at 0540 showed that Whiteman AFB was in the leading edge of an area of thunderstorms which extended northeasterly and southwesterly for a considerable distance and was moving southeasterly at 25 knots.

Aviation weather observations taken at Whiteman AFB for the period involved were as follows:

0542 Special, measured ceiling 3,800 feet broken, high overcast, visibility 10 miles, thunderstorm, wind 200 degrees 7 knots, thunderstorm northwest moving northeast began at 0541, occasional lightning in clouds northwest, rain showers of unknown intensity southwest to northwest.

0558 Record Special, measured ceiling 1,700 feet overcast, visibility 10 miles, thunderstorm, very light rain showers, temperature 69F, dew point 62F, wind 210 degrees 6 knots, altimeter setting 29.92 inches, thunderstorm west to north moving northeast, occasional lightning in clouds northwest, rain showers of unknown intensity west to north to north-northeast.

0607 Special, measured ceiling 1,700 feet overcast, visibility 3 miles, thunderstorm, light rain shower, hail, wind 300 degrees 4 knots, thunderstorm overhead, occasional lightning all quadrants, hail began at 0605, hailstones 1/4 inch in diameter.