Welcome Guest. Sign in or Signup

4 Answers

Static port blocked

Asked by: 5859 views Aircraft Systems, Instrument Rating

Hi

Why should we open heater ( on ) When STATIC PORT BLOCKED , and stby static in the cabin is on ?

Of course it is a part of PA-28 procedure but i dont know The reason, i will appreciate if anyone answer it.

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.

4 Answers



  1. John D. Collins on Nov 17, 2012

    Are you sure the procedure is to turn the cabin heat on? It would make more sense to me if it were recommending you turn Pitot heat on as the cause of the static port blockage could be ice.

    -3 Votes Thumb up 0 Votes Thumb down 3 Votes



  2. Jim F. on Nov 18, 2012

    Page 7.12 from the POH: “The storm window and cabin vents must be closed and the cabin heater and defroster must be on during alternate static source operation.”

    Why would pitot heat clear a static port blockage?

    From what I’ve heard (which was pure speculation), it is due to a slight negative pressure in in the cabin during flight. Turing on the heater and closing the cabin air vents will sightly increase the pressure in the cabin, reducing the altimeter error to less than 50 feet. Again, this was not from a verified source, but I have heard it from a couple independent sources.

    +3 Votes Thumb up 3 Votes Thumb down 0 Votes



  3. Jim F. on Nov 18, 2012

    Whoops, sorry John. I had my mind set on the BE-76, not the PA-28. Your right, the static port could be unblocked by pitot heat, since they’re located on the same fin.

    0 Votes Thumb up 1 Votes Thumb down 1 Votes



  4. Brian on Nov 20, 2012

    “Whoops, sorry John. I had my mind set on the BE-76, not the PA-28. Your right, the static port could be unblocked by pitot heat, since they’re located on the same fin.”

    Really depends. Piper likes to use that fin, but there is nothing stopping the owner from installing a static port on the fuselage to use instead. All of the arrows (half dozen or so) I’ve flown have a static port on the fuselage and don’t use the port on the fin.

    Interesting concept on the heat in the cockpit! I’ve not heard that before.

    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.