Check your bearings.The newer slew-to-cue Avengers can lose their bearings when they operate for long periods in one spot, which they often are required to do nowadays. The Avenger's north reference drifts sometimes. As a result, what the system thinks is north isn't is·n't Contraction of is not. isn't is not isn't be . That could spell trouble when the Avenger is trying to knock down enemy aircraft. TO HELP THE SYSTEM KEEP ITS BEARINGS, THE FOLLOWING CHECK IS BEING ADDED AS STEPS 9-12 IN STEP B IN PARA 2-37 IN TM 9-1425-1433-10 ... WHEN YOUR AVENGER STAYS IN ONE SPOT, DO THIS CHECK AT LEAST EVERY 12 HOURS TO MAKE SURE IT'S it's 1. Contraction of it is. 2. Contraction of it has. See Usage Note at its. it's it is or it has it's be ~have NOT LOSING ITS BEARINGS. * With the fire unit stationary Stationary can mean:
* Wait two hours. * Run North Reference Alignment again. Record the heading as--002. * If there is a difference of more than one degree between headings 1 and 2, tell your repairman re·pair·man n. A man whose occupation is making repairs. Noun 1. repairman - a skilled worker whose job is to repair things maintenance man, service man . The inertial reference unit An Inertial Reference Unit (IRU) is a type of inertial sensor which uses only gyroscopes to determine a moving aircraft’s or spacecraft’s change in angular direction (referred to as "delta-theta" or Δθ) over a period of time. probably needs to be replaced. [ILLUSTRATION OMITTED] |
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