INSTALLATION MANUAL AND OPERATING INSTRUCTIONS MD15
Contents
1. 95 70 C and 100 38 C Magnetic Effect no effect at 0 0m from unit DO 160F Section 15 Category Y 1 3 CONFIGURATION DATA Table 1 3 Part Number Range ft Barometer Knob MD15 211 20 000 Millibars Right MD15 212 20 000 Millibars Left MD15 221 20 000 In Hg Right MD15 222 20 000 In Hg Left MD15 311 35 000 Millibars Right MD15 312 35 000 Millibars Left MD15 321 35 000 In Hg Right MD15 322 35 000 In Hg Left other versions or options may be available on request REV C October 15 2010 5 Manual Number 9017061 SECTION 2 INSTALLATION PROCEDURE 2 1 GENERAL INFORMATION This section contains mounting dimensions and other information pertaining to the installation of the MD15 Altimeter 2 2 UNPACKING AND I NSPECTI NG EQUIPMENT When unpacking this equipment make a visual inspection for evidence of any damage that may have incurred during shipment The following parts should be included a Altimeter MCI P N MD15 b Installation Manual MCI P N 9017061 Optional equipment available a Light tray LED MCI P N MD31 4 6 28 14 5V b Light tray incandescent MCI P N 6015358 2 28V MCI P N 6015010 2 14V MCI P N 6018634 2 5V c Tinnerman nuts 3 MCI P N 6013031 Equipment not provided a Mounting Hardware three 3 46 32 screws 46 lock washers optional b Air fitting per aircraft mfg requirements 9 16 18 x 1 8 inch tube2. INSTALLATI ON MANUAL AND OPERATI NG I NSTRUCTI ONS MD15 Series Altimeter REV C October 15 2010 MANUAL NUMBER 9017061 REV C October 15 2010 2 Manual Number 9017061 REVI SION DETAIL Date Approved Detail 06 25 10 CJM BAW Initial release 08 12 10 BAW CJM Updated Table 1 2 with Humidity and Magnetic Effect info Added detail to Section 4 Conformance table o gt lt 10 15 10 MKN CJM Changed 0 890 0 885 from 2 625BC hole to knob hole cutout in Figure 3 2 REV C October 15 2010 3 Manual Number 9017061 SECTION 1 1 1 1 2 TABLE OF CONTENTS GENERAL DESCRI PTI ON INTRODUCTION TECHNICAL SPECIFICATIONS 1 2 1 1 2 2 SECTI ON 2 2 1 2 2 2 3 2 4 PHYSICAL ATTRIBUTES QUALIFICATIONS INSTALLATI ON PROCEDURE GENERAL INFORMATION UNPACKI NG AND INSPECTING INSTALLATION LIMITATIONS SECTION 3 3 1 OPERATI ON MINIMUM PERFORMANCE REQUIREMENTS 3 1 1 3 1 2 3 1 3 3 1 4 3 1 5 3 1 6 3 1 7 SECTION 4 4 1 4 2 SCALE ERROR HYSTERESIS AFTER EFFECT FRICTION CASE LEAK POSITION ERROR BAROMETRIC SCALE ERROR CONFORMANCE CONTINUED AIRWORTHINESS STATEMENT ENVIRONMENTAL QUALIFICATION STATEMENT NUMBER 1 1 1 2 1 3 3 1 3 2 3 3 LIST OF TABLES AND FIGURES PHYSICAL ATTRIBUTES TABLE QUALIFICATION TABLE CONFIGURATION DATA MD15 OUTLINE DRAWING PANEL CUTOUT DIMENSIONS MD15 REAR VIEW REV C October 15 2010 4 Manual Number 90
3. fitting available MCI P N NY 400 1 6ST 2 3 INSTALLATION Install the MD15 Altimeter within the aircraft in accordance with the aircraft manufacturer s instructions and the following steps A Ensure the available instrument panel cutout meets the requirements of the indicator See Fig 3 2 B Secure the indicator to the instrument panel using the screw sizes called out in the Section 2 2 Length of screws will be determined by aircraft instrument panel thickness The aircraft manufacturer or the installation facility is responsible for supplying appropriate hardware C Connect static line tube to the pressure port on the back of the altimeter CAUTION INSTALL FITTING IN PORT WITH NO MORE THAN 100 I N LBS OF TORQUE IF TORQUE IS NOT SUFFICIENT TO MAINTAIN A SEAL THREAD SEALANT MUST BE USED D For units with light tray connect wires to the appropriate voltage as marked on the light tray 2 4 LIMITATIONS The conditions and tests for TSO approval of this article are minimum performance standards Those installing this article on or in a specific type or class of aircraft must determine that the aircraft installation conditions are within the TSO standards TSO articles must have separate approval for installation in an aircraft The article may be installed only according to 14 CFR part 43 or the applicable airworthiness requirements REV C October 15 2010 6 Manual Number 9017061 0 171 3X 90 168 on 22 625 BC 46 3X 44
4. service facility 4 2 ENVI RONMENTAL QUALI FI CATI ON STATEMENT NOMENCLATURE Altimeter MODEL NUMBER MD15 TSO NUMBER C10b MANUFACTURERS SPECI FI CATI ONS Minimum Performance Specifications Test Specification TS 350 Test Data Sheet TDS 350 QUALI FICATION STANDARD _ FAA TSO C10b and SAE AS 392C CONDITIONS TSO DESCRI PTI ON SECTI ON Temperature 3 3 1 Ground Survival Low 65C Operating Low 30C Ground Survival High 70C Operating High 50C 95 at 70 C and 100 at 38 C Vibration 3 3 3 5 50 Hz 1 5g 50 500 Hz 0 5g four complete cycles no observed resonance 1 000 ft to rated range 1 000 ft to 50 000 ft zero magnetic effect at 0 0m from unit PEE S o REV C October 15 2010 11 Manual Number 9017061
5. 17061 1 1 INTRODUCTI ON SECTION 1 GENERAL DESCRI PTI ON The model MD15 series two inch Altimeter is a pressure actuated sensitive altimeter built to meet or exceed SAE AS392C standards as p er FAA TSO C10b Features include a three pointer indication 100 feet 1000 feet and 10 000 feet and an inset dial displaying the manual knob adjustment for barometric pressure correction Internally a compensation mechanism maintains accuracy throughout the rated temperature range 1 2 TECHNICAL SPECI FI CATIONS 1 2 1 PHYSICAL ATTRIBUTES Table 1 1 Characteristics Weight 0 8 pounds Dimensions See outline drawing Figure 3 1 Colors Dial background is black 37038 per FED STD 595 Markings are white 37875 per FED STD 595 Pointers are white with black hub and counterweight Case and bezel are black Cover Glass HEA anti reflective coated per MIL C 14806 Connection 9 16 18 UNJ F 3B per MS33649 06 Mounting Rear mount see panel cutout Figure 3 2 Lighting Field replaceable light tray available for 5 14 amp 28VDC input with incandescent bulbs or white LEDs 1 2 2 QUALIFICATIONS Table 1 2 Specifications Qualification FAA TSO C10b Altitude Valid 1 000 ft to rated range see Section 1 3 Altitude Survivable 1 000 ft to 50 000 ft Storage Temperature Operating Temperature 30 C to 50 C 22 F to 122 F 65 C to 70 C 85 F to 158 F Humidity
6. 2 280 25 565 REV C October 15 2010 3 777 T ret ey umet ii ST 3o DR LL 0 517 FI GURE 3 1 MD15 OUTLI NE DRAWI NG 0 172 3X 0 168 ON 92 625 BC XX1 right hand knob version XX2 left hand knob version FI GURE 3 2 PANEL CUTOUT DI MENSI ONS 7 Manual Number 9017061 STATIC PORT 0 515 9 16 18 UNJF 3B PER MS33649 06 GN NC M KOR XX1 right hand knob version XX2 left hand knob version FI GURE 3 3 MD15 REAR VIEW SECTION 3 OPERATION 3 1 MI NI MUM PERFORMANCE REQUI REMENTS The MD15 Altimeter shall meet these minimum performance requirements under standard test conditions 3 1 1 3 1 2 SCALE ERROR With the barometric scale pressure set at 29 92 inches of mercury 1013 millibars the altimeter shall be subjected successively to equivalent pressures from 1 000 ft to the rated altitude of the instrument at the increments established by Table 3 1 The reduction in pressure shall not exceed 20 000 feet per minute to within 2 000 feet of the test point The test point shall be approached at a rate compatible with the test equipment The instrument shall remain at each test point for at least one minute but not more than ten minutes before a reading is taken The error at all test points shall not exceed the tolerances stated in Table 3 1 HYSTERESI S The hysteresis test requirement s
7. five minutes after the completion of the hysteresis test the pointers shall have returned to their original reading corrected for any change in atmospheric pressure to within 30 feet 3 1 4 FRI CTI ON The altimeter shall be subjected to a steady rate of decreasing pressure equivalent to about 750 feet per minute The change in reading of the pointer before and after the application of vibration shall be recorded at the values indicated and within the tolerance as listed in Table 3 1 Note Where TSO prescribe altitude values for Friction test points do not match test points in the Scale Error test test points before and after the target value have been selected for this test for example where 5000 ft is called for test points are taken at 4000 and 6000 instead to match the Scale Error test This method exceeds the TSO requirement 3 1 5 CASE LEAK With an equivalent pressure of 18 000 feet applied the resultant leakage shall not cause the indicator to deviate more than 100 feet within one minute 3 1 6 POSITION ERROR With atmospheric pressure applied to the instrument the difference between pointer indication when the instrument is in normal operating position and when it is in any other position shall not exceed 20 feet 3 1 7 BAROMETRIC SCALE ERROR With ambient pressure constant the barometric pressure scale shall be adjusted to each of the values as listed in Table 3 2 and cause the instrument to indicate the corresponding alti
8. hall be verified within 15 minutes of reaching the upper limit of the Scale Error test as described in Section 3 1 1 Pressure shall be increased at a rate simulating a descent in altitude between 5 000 and 20 000 feet per minute until within 3 000 feet of half 5096 of the instrument s rated maximum operating altitude per 14 CFR Part 43 Appendix E Then the test point shall be approached at approximately 3 000 feet per minute Within 10 seconds after the pressure has been stabilized at the test point the instrument indication shall be within 100 ft of the original scale error reading The altimeter shall be kept at this pressure for at least 5 minutes but not more than 15 minutes before the reading is taken After the reading has been taken the pressure shall be further increased at the above rate until the pressure reaches a corresponding altitude of 4096 of the instrument s rated maximum operating altitude The instrument shall remain at this pressure for at least one minute but not more than 10 minutes before the test reading is taken After the reading has been taken the pressure shall be further increased at the above rate until atmospheric pressure is reached The reading of the instrument at either of the two test points shall not differ from the instrument reading taken at an equivalent altitude recorded during the Scale Error test by more than 75 feet REV C October 15 2010 8 Manual Number 9017061 3 1 3 AFTER EFFECT Not more than
9. tude within a tolerance of 25 feet REV C October 15 2010 9 Manual Number 9017061 Table 3 1 Scale Error and Friction Error REV C October 15 2010 Scale Error Friction Error Altitude Equivalent Pressure Tolerance Tolerance feet inches of mercury feet feet 1 000 31 018 20 0 29 921 20 Em 500 29 385 20 1 000 28 856 20 70 1 500 28 335 25 2 000 27 821 30 70 3 000 26 817 30 70 4 000 25 842 35 70 6 000 23 978 40 70 8 000 22 225 60 10 000 20 577 80 80 12 000 19 029 90 x 14 000 17 577 100 80 16 000 16 216 110 90 18 000 14 942 120 20 000 13 750 130 100 22 000 12 636 140 ex 25 000 11 104 155 120 30 000 8 885 180 140 35 000 7 041 205 160 no friction error reading required at this test point Table 3 2 Barometric Scale Error Barometric Scale Reading MB IN HG Indication feet 951 6 28 10 1 727 965 1 28 50 1 340 982 0 29 00 863 999 0 29 50 392 1013 2 29 92 0 1032 8 30 50 531 1046 4 30 90 893 1049 4 30 99 974 10 Manual Number 9017061 SECTION 4 CONFORMANCE 4 1 CONTI NUED AIRWORTHI NESS STATEMENT Federal regulations require that within the preceding 2 calendar years an active altimeter instrument be tested and found to comply with FAR Part 43 Appendix E If the unit fails to perform to specifications within this period it must be removed and serviced by a qualified
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