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BENDIX/KING KLN 90B
Rev 5, April/2003 10521I05.TDC Page 1-21
The KLN 90/90A’s upgraded to KLN 90B’s that are below S/N 1542 still will not have
isolation diodes and may need to have them added to the installation. If the KLN 90B
is without diode isolation and is paralleled with another unit such as a transponder, the
combination can cause a loading effect which may result in one or all of the units in
parallel being disabled. If the KLN 90B is connected to a dedicated encoding altimeter,
the diodes are not necessary.
3. Approved Airplane Flight Manual Supplement
A flight manual supplement will need to be prepared and approved. The supplement may
be prepared based on the sample, P/N 006-00835-0000. Refer to Appendix B for informa-
tion on preparing a flight manual supplement and a copy of the STC approval.
4. Pilot’s Guide
The KLN 90B pilots’ guide must be placed in the aircraft in a location that is accessible to
the pilot. The pilot’s guide is P/N 006-08773-0000 and the abbreviated pilot’s guide is
P/N 006-08774-0000.
1.9 INSTRUCTIONS FOR CONTINUED AIR WORTHINESS
The instructions for continued air worthiness given in the TC or STC approvals for this product
supplements or supercedes the instructions for continued air worthiness in this manual.
Most Honeywell products are designed and manufactured to allow “on condition mainte-
nance”. On condition maintenance is described as follows; There are no periodic service re-
quirements necessary to maintain continued air worthiness. No maintenance is required until
the equipment does not properly perform the intended function. When service is required, a
complete performance test should be accomplished following any repair action. Consult the
appropriate Unit Maintenance/Overhaul Manual for complete performance test information.