INSTALLATION MANUAL OPERATION MANUAL INSPECTION LOG
KANNAD 406 AF-COMPACT
PAGE: 603
FEB 01/2008
B. 6-year inspection
Replacement of battery pack is mandatory every 6 years (
replacement requirements, page 610
Testing of the following elements and parameters of the ELT is mandatory
every 6 years together with the battery pack replacement.
• Visual control of the housing and accessories
• Operation of the controls and crash sensor
• Measurement of 406 and 121.5 MHz output power and frequencies.
• Verification of digital message (coding).
This maintenance operation can be carried out with at least a Cospas-Sarsat
decoder capable of measuring output powers and frequencies, a torque wrench
with a 3 mm insert bit for hexalobular internal driving screws, a 50 ohm load and
the VHF tune receiver of the aircraft.
KANNAD suggests to measure output power, frequencies and check the digital
message using the WS TECHNOLOGY BT100AVTRIPLE Cospas-Sarsat
decoder (this decoder can be supplied by KANNAD under P/N 0140956) or
AEROFLEX IFR 4000 NAV/COMM Ramp Test Set. Other beacons testers can
be used if they are capable to fill the functions required to measure power and
frequencies of 121.5 and 406 MHz transmitters and to decode the digital
message. Refer to the applicable operation manual included with the test set.
6-year inspection must be performed in the order listed below.
(1) Visual control of the housing and accessories
- Remove ELT from its mounting bracket.
Refer to § 8. Removal, page 214
- Inspect the mounting bracket and the ELT.
Ensure the mounting bracket and the ELT are free of cracks or other
obvious damage.
- Inspect the connection.
- Visually inspect all connector pins.
(2) Operation of the controls and crash sensor
Refer to § (2) Operation of the control crash sensor, page 601
.
(3) Measurement of output powers, frequencies and verification of digital
message
- Connect the decoder to the BNC connector of the ELT front panel.
Refer to the applicable operation manual included with the decoder to
perform the following measurements.
CAUTION: some decoders may require the use of an attenuator
(risks of damage to test set), refer to the applicable operation
