Welcome Guest. Sign in or Signup

3 Answers

APU

Asked by: 3552 views Aircraft Systems, General Aviation

Hello folks,

I know every aircraft has an APU. I was just wondering if there are any APU on the ground to supply power to the aircraft

Regards

John

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

3 Answers



  1. Elliot Block on Feb 08, 2013

    Well, not every aircraft has an APU. Many commercial aircraft have them. There are GPU’s which are Ground Power Units. They function in a similar manner to an APU but are not contained within the aircraft’s fuselage.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes



  2. Wes Beard on Feb 08, 2013

    Hello John,

    Not all aircraft have an auxiliary power unit or APU. Typical APUs supply electrical power and bleed air for the air conditioning system.

    Ground power units can only supply electrical power. These GPUs come in both AC and DC versions with variable voltage and amperages.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes



  3. Sam Dawson on Feb 08, 2013

    Some ground units- normally called “huffers”- can supply pneumatic power normally used for starting main engines if the APU is not operational.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.