Important Note: The limitations data contained on these pages is applicable only to the Boeing 757-200 with Rolls Royce RB211 engines, unless otherwise stated. Although the data is from the Aircraft Flight Manual, errors may be found. The data is also subject to regular updates by operating airlines and the manufacturer and must therefore not be associated with the operation of a real aircraft. ALWAYS refer to your current Aircraft Flight Manual for up-to-date information.
| APU LIMITATIONS
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| General Limitations
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Flight cannot be based on the use of APU bleed air above 17,500 feet pressure altitude. The APU may be started at any altitude, but the start may be unsuccessful above pressure altitudes of 35,000 feet.
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| Starter Limitations
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Maximum of 3 consecutive start attempts within 60 minute period with a minimum 5 minute cooling period between attempts. If an APU start is unsuccessful on the ground, an outside observer must observe the next start to guard against tail-pipe fire.
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