Monday, July 28, 2014

Cessna SEL-05-03

EFFECTIVITY : All Cessna Model 172R, 172S, 182, T182T, 206H, AND T206H 
DISCUSSION  : Cessna wishes to announce that FAA Approved Airworthiness Limitations are now incorporated in the applicable maintenance manual as Chapter 4.
Chapter 4 lists life-limited components that must be replaced at a specified time.
                           It is recommended that you schedule the components for replacement during the airplane's inspection interval that aligns with or occurs just before the specified time limit expires.
                     Chapter 4 also lists maximum inspection time intervals (schedules) for specified components and systems.
                     An initial inspection and subsequent recurring structural inspections of specified components and systems are necessary to maintain the airworthiness of the airplane. The recurring inspection intervals do not begin until after the completion of the initial inspection.

Cessna SEL-05-03

Model 172 Series 1996 and On Maintenance Manual
Model 182/T182 Series 1997 and On Maintenance Manual
Model 206/T206 Series 1998 and On Maintenance Manual

Longer Battery Life

                                    In aircraft that sit for more than one week at a time, the battery will tend to self-discharge due to inactivity .
                                   Just like the muscles in your body – if you do not use them, you lose them. Concorde highly recommends that the battery be maintained with a charger that is voltage regulated with temperature compensation, like the BatteryMINDER. Or, if the aircraft is parked outside, with a solar charger. For maximum life and performance, these maintainers should be on 24/7, keeping the battery in a ready state of charge.
                                  Sometimes, but not every time, modern avionics are hot wired directly to the battery, bypassing the Battery Master Switch. This may cause a very small parasitic load. In time, though, this condition takes a toll on small aircraft batteries causing them to discharge faster than they would by simply self-discharging due to temperature. Lead Acid Batteries self-discharge at a much higher rate at warm temperatures than in freezing temperatures.
                                               Terminal Corrosion
              Battery cables and their ring terminals are copper, and all Concorde Batteries have copper terminals that do not corrode. Copper alloy terminals and hardware come with the battery and provide low resistance connections.
                                            FAA Approved Installation
           FAA Aircraft Circular AC 23-27 allows to install a Concorde Battery into unpressurized Cessna aircraft with just a logbook entry. Concorde Battery Corporation has obtained FAA Parts Manufacturing Approval for every Cessna battery part number.
                                           RG® VRLA-AGM Batteries
              Recombinant Gas (RG®) Valve Regulated Lead Acid (VRLA) Batteries or Absorbed Glass Mat (AGM) Batteries have almost replaced the flooded, or vented, dry charged batteries that need to be activated, charged and tested before being placed in service.
              RG® Batteries have plates wrapped in electrolyte-absorbed AGM and packed closely together, with less space between the plates. The reduced electrolyte weight has been replaced with more lead plates per cell, which means more active material and lower internal resistance for greater cranking power, along with more power for essential or emergency requirements.
              Erroneously, some pilots believe that higher capacity batteries may be detrimental to the aircraft systems. The opposite is true. With a higher capacity battery the starter, starter contacts, and all associated electrical equipment and avionics are taxed less because the systems voltage remains higher and the amperage draw is lower. Therefore, the highest capacity battery available for your aircraft is the safest and provides the longest life.

Friday, July 25, 2014

Cylinder Dehydrator Plug

At 15-day maximum intervals, a periodic check should be made of the cylinder dehydrator plugs and desic-cant. When the color of the desiccant has turned from blue to pink the preservation procedure must be repeated.
Lycomong SL180 Engine Preservation for Active and Stored Aircraft
             If the aircraft is stored in a region of high humidity, or near a sea coast, it is better to use dehydrator plugs instead of merely replacing the spark plugs as directed. Cylinder dehydrator plugs, MS-27215-2 or equivalent may be used.
   Preferably before the engine has cooled, install small bags of desiccant in exhaust and intake ports and seal with moisture impervious material and pressure sensitive tape. Any other opening from the engine to the atmosphere, such as the breather, and any pad from which an accessory is removed, should likewise be sealed.
Desiccant may be obtained through a Textron Lycoming distributor using the following part numbers:
Part No. 40249 = 1/2 lb. Desiccant
Part No. 40249-1 = 1 lb. Desiccant
Part No. 40249-2 = 1/8 lb. Desiccant
Part No. 40249-3 = 1/4 lb. Desiccant

Please leave comments and share.