Linda, I just had the VFR transponder check completed last Monday at the same avionics shop that did 2 years ago and the pitot static is not required as you say. I fly constantly in the the DCA ADIZ with out any problems. The total cost including log book entries was $ 85, which to my surprise was the same as 2 years ago. But there were some shops that charged as much as $300.
Jim Truxel N3439H Frederick, Md ----- Original Message ----- From: Linda Abrams To: [email protected] Sent: Tuesday, August 24, 2010 3:20 PM Subject: [ercoupe-tech] pitot-static checks, and ASI allowable error This is purely an FYI post, so our archives will contain the research for the next person faced with these issues (and so I don't forget the next time it comes up). Re: pitot-static check I had the formal transponder check done yesterday. The avionics shop seemed to think that a pitot-static check is supposed to be done at the same time. I researched the regs and found that pitot-static checks are only required for IFR operation: FAR 91.411. (However, I was warned by Joe Norris at EAA that some shops have shop manuals which form the agreement between them and the FAA for their operation and may contain requirements different than the FARs. If that is the case, the shop should warn you of that.) Re: Airspeed Indicator allowable error I have not yet done Ed B's recommended flight test of my ASI, however the avionics shop tested my ASI and found it reads 5 knots low at 60 & 80 and 2 knots low at 100 kts. At first, the avionics guy seemed to think that the allowable error for an ASI is only 2%; however I researched the FARs again and found Sec. 27.1323, which gives allowable error of +/- 3% OR 5 KNOTS, whichever is greater. (Of course, Joe Norris also pointed out that the most important thing is for each to know the calibration of his/her own plane, and compensate where necessary.) Again, this is just for our collective memory banks. Linda N3437H (Sky Sprite) L.A.
