Honeywell International Inc. DMA-37B2 Manuale Utente

Page 2014

10 Oct 2007

DMA-37B DME System

© Honeywell International Inc. Do not copy without express permission of Honeywell.

b

Test Procedures
(1) Apply power to DMA-37B DME System.
(2) Set NAV control to frequency of a nearby DME station.
(3) Note distance readout of DME display to the selected DME station and 

compare this to calculated distance on a visual flight rules (VFR) chart. 

Verify that the two distances agree within 0.1 nautical mile.

(1) Loosen the two knurled screw clamps (located on the front of mount) that secure the 

DMA-37B to the mount.

(2) Gently pull the DMA-37B forward until it is disconnected from the rear connector and 

guide pins.

(1) Slide the DMA-37B onto the tray of the mount and then gently push the DMA-37B until 

the guide pins are aligned and the connectors make a firm connection.

(2) Tighten the two knurled screw clamps located on the front of the mount until they are 

firmly seated over the hold-down hooks located on the front of the DMA-37B.

(3) Safety wire the two knurled screw clamps.

(1) There are no adjustments or alignments required for the DMA-37B DME System. All 

alignment and adjustment procedures are accomplished during bench maintenance. 

The technician must remove the unit from the aircraft and reference must be made to 

the related maintenance manual when unit performance indicates an adjustment or an 

alignment is required.

(1) The system must be protected by a 2-ampere circuit breaker located at the circuit 

breaker panel in the aircraft. 

(1) There are no requirements for periodic lubrication of any DMA-37B DME System 

components while mounted in the aircraft. Reference must be made to the applicable 

maintenance manual for lubrication procedures during routine maintenance of individual 

units. Refer to Paragraph 4 in the INTRODUCTION section of this manual for a list of 

related maintenance manual publications.

(1) When deemed necessary, depending upon the environment to which the equipment is 

exposed and the intensity of use, periodic cleaning must be performed. Any dust on the 

DMA-37B DME System LRUs must be wiped off with a lint-free cloth.
NOTE: Any cleaning of equipment interiors must be limited to that required when 

performing overhaul (bench-type) work.