Page 42 - Nov 2015 Volume 9, Number 11

It is imperative that anyone turning ON the Battery Master Switch makes sure that the Propeller De-Ice switch is in the OFF position as part of the power on procedures. This practice will prevent inadvertently having the propeller heat ON anytime the engines are not running.
The propeller de-ice system can be tested for maintenance, but it is important that maintenance personnel do not exceed the 10 second limit.
ATA 34 – ACSS TAWS+ System Flap Override Mode Operation
Recently, an issue was reported by a King Air operator whose Aviation Communication and Surveillance Systems (ACSS) Terrain Awareness Warning System (TAWS+) system faulted when the flap override mode was selected in flight. Analysis of the downloaded fault data revealed that the flap override mode was selected on descent while the airplane was traveling at greater than 200 knots. This is per design and normal operation, but is not a published limitation. Pro Line 21 King Airs equipped with the ACSS TAWS+ system are configured through the Aircraft Configuration Data (ACD) and the Aircraft Specific Database (ASDB), which reside in the Aircraft Personality Module (APM). This data configures the TAWS+ computer for operation in a specific airplane model as it initializes. One of the limitations programed into this system for King Airs will fault the TAWS+ computer if flap override is selected when airplane speed is greater than 200 knots. This value coincides with the 200-knot maximum flap extension speed on the airplane. This article is to inform operators of this condition. Depending on the interpretation of the pilot’s operating handbook flaps up landing procedure, an operator could select the mode too early and see the reported issue. Deselecting the mode will clear the fault and it can then be reselected after the airplane is below the limiting airspeed. For questions concerning this issue, please contact Beechcraft Corporation customer support at (800) 429-5372, (316) 676-3140 or by email at kingair_support@txtav.com.
The above information is abbreviated for space purposes. For the entire communication, go to www.beechcraft.com.
40 • KING AIR MAGAZINE
King Air
1st Source Bank.............Inside Back Cover Aerospace Resources ............................ 16 AVCON Industries Inc. ........................... 19 AvFab/CentralAirmotive........................34 Aviation Services & Sales, Inc................32 B/E Aerospace, Inc................................ 17 CenTex Aerospace...............................8, 9 Cleveland Wheels & Brakes ................... 19 Elliott Aviation........................................35 Garmin International .......Inside Front Cover GemcoAviationServices.......................33 Gogo Business Aviation .........................25 Hillaero Modification Center ...................29 Hope Flight Foundation .......................... 17 Kadex Aero Supply ................................ 15 King Air Academy..................................39 Luma Technologies LLC.........................23
More Company......................................36 Murmer Aircraft Services....................... 13 Nashua Flight Simulator.........................36 PaulBowen...........................................38 Pilots N Paws ........................................ 19 Precision Avionics Group .......................38 Prop Sync Solutions .............................. 19 Raisbeck Engineering ......................20, 21 Rapco Inc..............................................31 Select Airparts ...................................... 16 ShawAeroxLLC....................................29 Silverhawk Aviation................................37 Textron Aviation........................Back Cover Trace Aviation........................................ 27 West Coast Aircraft Sales...................... 7 Winner Aviation Inc................................ 18
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DECEMBER 2015