Aborting Engine Start.

Engine/Fuselage Fire on Ground. If ENG FIRE PULL

TM-1-1520-238-10 Helicopter Attack AH-64A Apache Manual
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TM 1-1520-238-10 9-16 Change 9 9.10.7 Aborting Engine Start. WARNING Aborted engine starts may cause fuel to collect in the engine nacelle. Sub- sequent engine starts may be attempted only after the nacelle door/work platform is opened and the nacelle inspected for fuel. If during the initial start an abnormal TGT rise was evident, or fuel is evident in the nacelle, the ignition system shall be checked IAW standard maintenance pro- cedures. CAUTION Abort Start for any of the following rea- sons: If it becomes apparent that TGT will exceed 852C before N_G idle speed (63% or more) is attained. If TGT does not increase within 45 sec- onds after moving PWR lever to IDLE. If no N_p within 45 seconds after mov- ing PWR lever to IDLE unless rotor is locked. If positive oil pressure indication does not occur within 45 seconds after moving PWR lever to IDLE. ENG START light extinguishes prior to 52% N_G. Abort start procedures are as follows: 1. PWR lever – OFF. 2. ENG START switch – IGN OVRD for 30 sec- onds or until TGT is below 540 C. 9.11 ELECTRICAL SYSTEM FAILURES. CAUTION In the event any circuit breaker opens for unknown reasons, do not attempt to re- set the breaker more than one time. Re- peated tripping of a circuit breaker is an indication of a possible problem with equipment or electrical wiring. Multiple attempts to reset the circuit breaker may result in equipment damage and/or an electrical fire. NOTE If generator fails in flight do not place generator switch of failed generator in test position. During an electrical system malfunction and operating on EMERG BATT power, the HSI/RMI will not provide adequate in- dications to the station. 9.11.1 GEN 1 and GEN 2 Caution Light On. NOTE In the event both generators are lost, turn off all unnecessary equipment on the emergency bus to conserve battery pow- er. Battery power, assuming a 90% charge, is normally sufficient for 12 min- utes emergency bus operation. When the battery heater is inoperative/discon- nected and operating at temperatures below –30 C (–22 F), power may only be available for one minute of emergency operation. Selectable stores jettison will not function in the event of a dual generator failure. 1. GEN switches 1 and 2 – OFF/RESET – GEN. If power is not restored: 2. GEN switches – OFF. 3. LAND AS SOON AS PRACTICABLE.

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