Appendix 1 to ETSO-C10c - Minimum Performance Standard (MPS) for Pressure Altimeter Systems

• ED Decision 2020/011/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

###### Appendix 1 to ETSO-C10c – Minimum Performance Standard (MPS) for Pressure Altimeter Systems *ED Decision 2020/011/R* This Appendix defines the modifications and additions to the MPS for pressure altimeter equipment specified in SAE AS8009C, Pressure Altimeter Systems, dated 24 May 2016. <table bgcolor="#d9d9d9" cellpadding="7" cellspacing="0"> <col/> <col/> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>SAE AS8009C Section(s)</b></p> </td> <td bgcolor="#808080"><p align="left"> <b>Change</b></p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>3.4</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a note following the paragraph to read:</p> <p align="left">Note: Markings for the altitude range may be omitted for instruments that use a tape-type display. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>3.10</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Delete current Section 3.10 and Table 9. Replace with the following:</p> <p align="left"> 3.10 Temperature Corrections</p> <p align="left">Altimeters covered by this standard shall not incorporate automatic temperature corrections. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>3.11 </b> </p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a new third paragraph to read:</p> <p align="left">Instruments that use a tape-type display or present altitude with a digital readout are permitted to use tic marks every 100 feet with a more prominent mark every 500 feet in agreement with SAE ARP4102/7, Appendix A, Symbols 39 and/or 40. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>3.12 </b> </p> </td> <td bgcolor="#d9d9d9"><p align="left"> Change the third sentence to read:</p> <p align="left">The word ALTITUDE or ALT may be marked on the dial in capital letters and may be in the same finish as the numerals. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>3.12</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a note following the paragraph to read:</p> <p align="left">Note: Markings for the altitude range may be omitted for instruments that use a tape‑type display. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>5.</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a new paragraph:</p> <p align="left">Some of these tests may be performed only once provided that it is demonstrated that this test will demonstrate performance for each article.</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>5.10</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a new paragraph:</p> <p align="left">For altimeters with an electronic display, this test may be replaced by showing compliance with SAE AS8034C, Section 3.8, Malfunctions/Failure Indications and Section 4.6, Operating Time.</p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>5.11</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a requirement for performance testing of Electronic Display Altimeters:</p> <p align="left">Electronic displays shall demonstrate their compliance with the SAE AS8034C requirements specified in Table 10 using the test procedures specified in SAE AS8034C, Section 6, as applicable. </p> </td> </tr> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>6.29</b></p> </td> <td bgcolor="#d9d9d9"><p align="left"> Add a requirement for environmental testing of Electronic Display Altimeters:</p> <p align="left">Electronic displays shall demonstrate the compliance of their equipment with the requirements of SAE AS8034B specified in Table 10 using the environmental performance requirements specified in SAE AS8034B, Section 5. </p> </td> </tr> </table> [Amdt ETSO/16]