MAINTENANCE INSTRUCTIONS
HALON 1 / 1,2 / 2,5 AIR TOTAL
ATA 26-24-05
I 74/76-00 dated May 2014
Page 6 of 13
Subject to change without notice
Replaces H 74/76-00 dated October 2012
Release: October 2012
Inspection regulations
In case of security relevant damages the fire extinguisher has to be scrapped immediately.
If the pressure is reduced the fire extinguisher has to be basically overhauled immediately.
(1) Pre-flight inspection
Check the pressure gauge. At room temperature the indicator must be in the green section.
The seal wire on the safeguard lever must not be damaged.
(2) Periodical check
The inspection should be carried out every 2 years, or in shorter intervals, depending on
internal regulations.
Integrity of wire seal
visual inspection
Condition of extinguisher, mounting bracket and
visual inspection
fastening strap
Legibility of label
visual inspection
Container pressure / gauge
visual inspection
At room temperature the pointer must be in the
green section of the dial.
Weight control / scale
Permissible deviation: 2% of fill capacity / year, but not more than 10% of fill capacity
(3) Characteristics after 5 years
After expiration of 5 years, in case of filling / refilling, the container of the fire extinguisher has
to be inspected inside. Should defects be detected, the extinguisher has to be hydrostatically
pressure tested.
(4) Basic overhaul
Container hydrostatic pressure test
All fire extinguishers, listed in that maintenance procedure instruction, must be hydrostatically
pressure tested at regular 10 year intervals.
The 10 year period starts with the date of
production of the extinguisher
(see label on back). Should defects be detected at a regular
inspection, this pressure test must be performed earlier. These tests shall only be carried out
by an authorized aviation equipment inspector, well adverted with the safety standards
applicable to this test. Furthermore, also required is an adequate room and the necessary
test equipment. After the hydrostatic pressure test the cylinder has to be desiccated inside.
If the second hydrostatic pressure test is due, the manufacturer recommends to replace the
extinguisher!
