What advantage is there to incorporating your STC?
Your ramp weight is increased to 3110 pounds, your Maximum Gross Takeoff Weight (MGTOW) to 3100 pounds. This allows you to legally take off with an additional 150 to 160 pounds of useful load or payload. If you elect to use this capability by adding about an extra 25 gallons of fuel, you'll enjoy greater range, greater endurance, and greater safety.
Depending on your airplane's specific fuel consumption (higher for early 182P models, lower for 182Q's) and your selected cruise power settings, your range will increase by 260 to 310 nautical miles or more, and your endurance by 2 to 2.6 hours or more. You might also avoid an unnecessary fuel stop and the related costs in both time and money.
Your loading flexibility is not limited to carrying only more fuel, since there is no Maximum Zero Fuel Weight limitation.
What changes are made to my airplane?
Absolutely none. There are no parts required, no installations to be made, no labor costs to consider. Your IA/A&P or other maintenance provider may charge you for completing the required FAA Form 337, and signing it, thereby "returning your airplane to service." As the "installer" it is his or her responsibility to assess the compatibility of our STC with any previous major repairs or alterations that your airplane has undergone. In most cases, this should be a straightforward matter unless your airplane has had many previous mods and insufficient paperwork.
I'm confused. Is this a gross weight increase, a ramp weight increase, a useful load increase, or a payload increase?
Yes, this is a little confusing. Actually, the STC allows all four.
Since it does not increase the empty weight of your airplane (OK, less a few ounces for the required STC paperwork!), your max gross takeoff weight is increased by 150 pounds. If your airplane is a 1978 - 1980 182Q model, this represents an increase in useful load of 150 pounds as well. Your original ramp weight was 2960 before we increased it to 3110.
Should yours be a 1972 - 1976 182P or a 1977 182Q, your ramp weight was less... it has now gone from 2950 to 3110; your useful load has therefore increased by 160 pounds.
Payload is another matter entirely. Fuel is not considered payload, but is a portion of your useful load. So, for example, if you elect to use only 60 pounds of the 150 pound MGTOW increase for fuel (about 10 gallons), your payload increase is 90 pounds. If no portion of the increase is used for fuel, both your useful load and payload have increased by 150 - 160 pounds.
Is this STC also accepted by EASA?
Yes and no. Many countries have reciprocal airworthiness agreements with the United States that allow an FAA issued STC to be accepted by the foreign airworthiness authorities without further showing. New Zealand and Australia are two examples. In many cases, depending on the complexity of the STC (this one is rather straightforward), certification authorities have just "accepted" the FAA STC on its face. Generally, however, the process is becoming more formalized. The European Aviation Safety Agency (EASA) for example, works closely with FAA to "validate" US STCs for Europe. EASA has now issued STC 10026913 which may be incorporated in all of the European Union (EU) countries, as well as non-EU EASA associate member countries (e.g., Switzerland and Norway). In other cases, it is suggested that you contact your National or Civil Aviation Authority (NAA or CAA) to determine what needs to be done in order to incorporate our STC.
Can a previous STC installed in my airplane preclude incorporating your STC?
This would be a very unusual situation. However, should none of the "authorized persons" be willing to sign your 337, your investment is safe. 100% of your purchase price will be refunded, given that you return all documents along with a written explanation of why the STC could not be incorporated, within 60 days of purchase.
My 182Q has a Texas Skyways conversion to an O-520 engine. Would this make a difference in being able to use the STC?
Per the manufacturer, this aircraft will have no problem using the STC.