Southeast Aerospace exchanges are based on the return of an undamaged, economically repairable core unit with identical part number as the unit shipped to the customer. An "economically repairable" core is defined as one where the cost to repair/overhaul (or Repair Cap) does not exceed 80% of the original SV/OH exchange price billed. Should the Repair Cap exceed 80%, the customer will be billed the additional amount. In the event this amount exceeds the Outright Price for the unit, the customer would only be billed the difference between the Outright Price and SV/OH Exchange Price with the core returned as-is to the customer.

Here is an example of such a transaction:

$1000 Exchange Price charged to customer
$1000 x .8 = $800 Maximum Allowable core repair charge or Repair Cap

$2000 Cost to repair core unit
- $800 Less Core repair cap
---------
$1200 Additional billing amount.

2200.00 Total Cost of transaction

Please Note:
SEA offers exchange on new items as well. However, repair cap as indicated above is still based on SV/OH exchange price.

The Mid-Continent TS835 is a lighter weight alternative for the PS-835 power supplies. The TS835 weighs only 4.5 pounds while the PS-835 weighs 13 pounds. The TS835 has a battery life expectancy of 10 years. No rewiring or changing of the mounting rack is required when upgrading to the TS835 from the PS-835. Certification of the installation is not affected since TSO'd parts are being interchanged.

According to L3 Service Letter SL-80 (Rev. W), the condition of the batteries should be checked every 3 to 6 months according to the Periodic Check procedure outlined in the bulletin. If the "Voltage Level 24VDC LED" does not illuminate while the 20VDC is illumined, then the unit is incapable of providing emergency power. The "Cell Isolation Test" must then be performed to identify if the unit requires repair or charging.