Part Number
Definition:
A SERVO CONTROLLED INSTRUMENT WHICH MEASURES ALTITUDE BY DIAL INDICATION TRANSMITTED BY SYNCHRO FROM A REMOTE SOURCE. THE TRANSMITTED ALTITUDE MAY BE PRESSURE ALTITUDE AS DERIVED FROM AN AIR DATA COMPUTER OR OTHER SUITABLE TRANSMITTER. IT EMPLOYS A ZERO SETTING SYSTEM TO PERMIT THE ALTIMETER TO BE SET AT ZERO ALTITUDE AT AN EXISTING GROUND LEVEL. THE ITEM INCORPORATES AN AUTOMATIC STANDBY FEATURE WHICH WILL REVERT TO DIRECT STATIC PRESSURE ACTUATION, INDICATED BY A WARNING SIGNAL IN THE EVENT OF ELECTRICAL MALFUNCTIONS OR AT THE PILOT'S OPTION. THE ITEM IS DESIGNED FOR USE IN AIRCRAFT WHERE ACCURACY IS REQUIRED TO MEET ALTITUDE SEPARATION REQUIREMENTS. SEE ALSO INFORMATION POSITIONING SET.
CAGE Information
| Code | Company |
|---|---|
| 07878 | AERONAUTICAL AND SUPPORT EQUIPMENT T |
Federal Supply Class
Title
FLIGHT INSTRUMENTS
Inclusions:
INCLUDES AIR SPEED INDICATORS; RATE OF CLIMB INDICATORS; BANK AND TURN INDICATORS; PITOT TUBES; GYRO HORIZON INDICATORS; ATTITUDE GYRO INDICATORS.
Exclusions:
EXCLUDES NAVIGATIONAL INSTRUMENTS (FSC 6605).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ASSL | KNOB PURPOSE | SET BAROMETRIC PRESSURE COUNTERS; TURN SERVO SYSTEM OFF OR RESET SERVO SYSTEM |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | ALTIMETER,SERVOED,COUNTER-DRUM-POINTER |
| ASSK | KNOB QUANTITY | 2 |
| FEAT | SPECIAL FEATURES | POWER 115 VAC, 400 HZ, SINGLE PHASE; INTEGRAL 5 VAC LIGHTING; DIAL DIAMETER 2.750 INCHES; HOUSED IN STANDARD MS33556 INSTRUMENT CASE; EACH REVOLTUION OF POINTER MEANS 1000 FEET OF ALTITUDE CHANGE; HUNDREDS OF FEET READ FROM VERTICAL DRUM; THOUSANDS OF FEET READ FROM 2 COUNTERS |
| ASPC | POINTER QUANTITY | 1 |
| APSJ | SCALE QUANTITY | 3 |
| ABHP | OVERALL LENGTH | 8.500 INCHES NOMINAL |
| BBHL | SCALE SMALLEST INCREMENT GRADUATION | 50 FEET |
| ASPD | POINTER FINISH | NONLUMINOUS |
| FTLD | FUNCTIONAL DESCRIPTION | A SERVOED ALTIMETER WITH AUTOMATIC PRESSURE STANDBY FEATURE WITH A RANGE OF -1000 TO +80,000 FEET; BAROMETRIC ALTITUDE DATA IS TRANSFERRED VIA SYNCHRO OUTPUTS TO THE ALTIMETER SERVO MECHANISM WHICH IN TURN DRIVES THE COUNTER-DRUM-POINTER DISPLAY MECHANISM; THE UNIT PROVIDES THE PILOT WITH VISUAL INDICATION OF THE ALTITUDE BEING TRANSMITTED TO GROUND STATIONS |
| BBHK | SCALE RANGE | RANGE -1000 TO +80,000 FEET |
| ABMK | OVERALL WIDTH | 3.250 INCHES NOMINAL |
| ASPG | SCALE MARKING AND SURFACE FINISH | SALT WATER HECTOBAR |
| AQFZ | SCALE NAME | ALTITUDE |