Mar 2017
Page 50
© Penny & Giles Aerospace Ltd. No part of this work may be reproduced or distributed by any
means without prior permission in writing from the copyright owner.
DATA ACQUISITION FLIGHT RECORDER Type D51615-202-XXX or D51615-
202-XXX-090- with CCU Type D51616-XXXX and CAM Type D51623-XXXX
Installation and Operating Manual with Illustrated Parts
List
Commercial in Confidence
PIM434-I
(5) Adjust the Test Set kHz tuning to give the best audible
tone.
(6) A normal tone equates to one ‘blip’ every second. If the
repetition rate is greater, the battery is exhausted and
requires replacement.
(7) Disconnect the short circuit from the central pin to the
beacon case.
6.4.4 ULB Removal and Replacement (30-Day Beacon Battery)
At the intervals specified, or whenever the beacon or battery
fails its periodic test, the beacon assembly must be removed
and a replacement installed. ULB removal and replacement is
as follows:
CAUTIONS:
1.
CARE MUST BE TAKEN TO ENSURE THAT THE PAINT
AROUND THE FIXING NUTS IS NOT DAMAGED
DURING THIS PROCEDURE.
2.
THE ULB BRACKETS ARE DIFFERENT, THE TOP
BRACKET IS SLOTTED TO PREVENT THE BUILT UP
OF MOIST TRIGGERING THE ULB AND THUS
DRAINING THE ULB BATTERY. CARE MUST BE
TAKEN WHEN REASSEMBLING THE ULB TO THE
DAFR TO ENSURE THAT THE CORRECT BRACKET IS
USED IN THE CORRECT POSITION.
3.
DAFR TYPE D51615-202-XXX CONTAINS
ELECTROSTATIC SENSITIVE DEVICES. EITHER
CARRY OUT COMPANY PROCEDURES OR REFER TO
BS IEC 61340-5-1:2007.
Item numbers in the text refer to the Illustrated Parts List
Figure 14.
(1)
Gain access to the ULB (50)
(2)
Remove the four M5 socket head cap screws (80)
together with the four M5 washers (90) from the
beacon brackets (60 and 70).
(3)
Remove the ULB (50), together with the beacon
brackets (60 and 70), from the main cover (120).
(4)
Remove the two beacon brackets (60 and 70) from
the ULB (50) and remove the fluorosilicone ring (100)
from
the bottom bracket (60).
(5)
Obtain a certified ULB (50) with a new battery from the
Manufacturer (Dukane/Datasonics), and perform the
ULB Battery Test as described in para 6.4.2 and the ULB
Test in para 6.4.3.