If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
tso altimeter
On Dec 6, 12:34*pm, Phoenixmotoman wrote:
I want to install a Winter 4FGH 40 altimeter with an EASA Form 1 certificate in my S-LSA motorglider with the Becker TSO'd transponder. *My avionics shop says that the altimeter must be TSO'd as well. *Can anyone cite FAA regulations about this issue? *Any information would be welcome. Since they are saying this did you ask them why? Your avionics shop may be mixing up requirements in 14CFR 91.411 for IFR aircraft that require detailed altimeter testing and either you have to do that testing or you can use a TSO'ed altimeter to meet the same requirement. But that 14CFR 91.411 requirement overall should not apply to you unless you are flying IFR... If this is an experiential aircraft then you the altimeter requirements should be pretty simple (I'd be surprised if anything there would ever require a TSOed altimeter - you tell me). Adding a transponder does not change things too much. Transponder requirements are outlined in 14CFR 91.215 (which says the transponder must meet certain requirements as outlined in one of several possible TSOs) nothing about altimeters there. And 14CFR 91.413 requires altimeter systems tests outlined in paragraph (c) of Part 43 Appendix E. And that little paragraph is just about the only altimeter related things with transponders most of us ever need to worry about... here it is... "(c) Automatic Pressure Altitude Reporting Equipment and ATC Transponder System Integration Test. The test must be conducted by an appropriately rated person under the conditions specified in paragraph (a). Measure the automatic pressure altitude at the output of the installed ATC transponder when interrogated on Mode C at a sufficient number of test points to ensure that the altitude reporting equipment, altimeters, and ATC transponders perform their intended functions as installed in the aircraft. The difference between the automatic reporting output and the altitude displayed at the altimeter shall not exceed 125 feet." --- Are you talking about a new Mode C transponder or existing one? If a new one why install a Becker Mode C when the Trig TT21 Mode S is available? Seriously, bad choice, if it is new return it and swap it for a Trig TT21. The T21 uses less power, is more compact, easier to install and more importantly provides a future to ADS-B 1090ES data- out -- something nice for people adopting a PowerFLARM as it lets other PowerFLARM receivers see you directly over long distances (much longer then FLARM-FLARM) and will enable the PowerFLARM to provide ADS- B capabilities like ADS-R and TIS-B (which you won't reliably receive unless you have an ADS-B transmitter). Darryl |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
WTB: used 57mm Altimeter OR swap for 80mm Altimeter | joesimmers | Soaring | 0 | November 3rd 09 11:59 AM |
Looking for TSO Altimeter | Rob Turk | Home Built | 0 | June 9th 07 03:52 PM |
Altimeter off | kevmor | Instrument Flight Rules | 11 | March 26th 07 12:11 PM |
encoding altimeter | mcfrog | Owning | 3 | May 30th 04 07:39 PM |
Altimeter experience | HankC | Piloting | 2 | July 25th 03 09:43 PM |