Pratt & Whitney <br/><br/>
JT9D Turbofan Engine Training Handbook / Pratt & Whitney Aircraft 

<br/><br/> APU Description and Operation ; Component Identification ; System schematics ; Operational test equipment ; Troubleshooting ; Fault index ; Indication problems Before starter ; Start problems ; Indication problems during operation ; Indication problems during Shutdown ; Glossary. 
<br/><br/><label>Dewey Class. No.: </label>629.134353  / P71j