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Part # MC1741-116.25
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Please note: Due to this product's length and required packing material, the estimated freight charge quoted at the time of checkout will not be correct. Additional shipping and crating charges on top of the quoted freight charge will also apply. For an accurate estimate of actual shipping costs, please email your address and preferred ship method to our Shipping department at [email protected]. This product can ONLY ship domestically via FedEx Express services (not including FedEx Ground) due to the length. Please contact our Shipping department for international shipping options. |
New streamline shape and improved fit to reduce stress cracks.
FAA-PMA Stiffener made of 6061 T6 Aluminum material.
Logbook entry is all that is required.
What is the purpose of a flap trailing edge stiffener?

McFarlane's stiffeners are streamlined and have the correct angle.

Original stiffeners deform the skins, resulting in cracks, strain in the corrugation, and stress around the rivet heads.
Early airplanes did not have a stiffener, but it can be added.
New Improved Fit to Reduce Skin Stress
Our new McFarlane stiffeners are accurately shaped to the same angle that the top and bottom skins come together to completely eliminate the bending stress due to riveting the skins together. This prevents stress concentration in the skin corrugations and near the rivets making cracks less likely. McFarlane has improved the stiff ener angle as compared to other brand of triangle stiffeners.
New Streamline Shape
Our new design smoothly transitions from the skin surface to a blunt trailing edge without an unsightly bulb and resultant drag found on common trailing edge stiffeners. The new shape even weighs less than other bulky stiffeners.
Instructions for Continued Airworthiness

WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources
| Make | Model | Start S/N | End S/N | Quantity Per Aircraft | Location | Eligibility Chart |
|---|---|---|---|---|---|---|
| Cessna 206 | 206 | S/N 206-0001 – 206-0275 | 206-0275 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna 206H | 206H | S/N 20608001 – 206999999 | 206999999 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206 | P206 | S/N P206-0002 – P206-0160 | P206-0160 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206A | P206A | S/N P206-0161 – P206-0306 | P206-0306 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206B | P206B | S/N P206-0307 – P206-0419 | P206-0419 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206C | P206C | S/N P206-0420 – P206-0519 | P206-0519 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206D | P206D | S/N P206-0520 – P206-0603 | P206-0603 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna P206E | P206E | S/N P20600604 – P20600647 | P20600647 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna T206H | T206H | S/N T20608001 – T206999999 | T206999999 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TP206A | TP206A | S/N P206-0191 – P206-0306 | P206-0306 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TP206B | TP206B | S/N P206-0307 – P206-0419 | P206-0419 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TP206C | TP206C | S/N P206-0420 – P206-0519 | P206-0519 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TP206D | TP206D | S/N P206-0520 – P206-0603 | P206-0603 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TP206E | TP206E | S/N P20600604 – P20600647 | P20600647 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206A | TU206A | S/N U206-0487 – U206-0656 | U206-0656 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206B | TU206B | S/N U206-0657 – U206-0914 | U206-0914 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206C | TU206C | S/N U206-0915 – U206-1234 | U206-1234 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206D | TU206D | S/N U206-1235 – U206-1444 | U206-1444 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206E | TU206E | S/N U20601445 – U20601700 | U20601700 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206F | TU206F | S/N U20601701 – U20602199 | U20602199 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206F | TU206F | S/N U20602200 – U20603521 | U20603521 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna TU206G | TU206G | S/N U20603522 – U20607020 | U20607020 | Quantity Per Aircraft 2 | Location Wing Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206 | U206 | S/N U206-0276 – U206-0437 | U206-0437 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206A | U206A | S/N U206-0438 – U206-0656 | U206-0656 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206B | U206B | S/N U206-0657 – U206-0914 | U206-0914 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206C | U206C | S/N U206-0915 – U206-1234 | U206-1234 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206D | U206D | S/N U206-1235 – U206-1444 | U206-1444 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206E | U206E | S/N U20601445 – U20601700 | U20601700 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206F | U206F | S/N U20601701 – U20602199 | U20602199 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206F | U206F | S/N U20602200 – U20603521 | U20603521 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna U206G | U206G | S/N U20603522 – U20607020 | U20607020 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna 207 | 207 | S/N 20700001 – 20700362 | 20700362 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna 207A | 207A | S/N 20700363 – 20700788 | 20700788 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna T207 | T207 | S/N 20700001 – 20700362 | 20700362 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna T207A | T207A | S/N 20700363 – 20700788 | 20700788 | Quantity Per Aircraft 2 | Location Flap Trailing Edge Stiffener | Eligibility Chart 1743 |
| Cessna 210D | 210D | S/N 21058221 – 21058510 | 21058510 | Quantity Per Aircraft 2 | Location Flap Trailing edge Stiffener | Eligibility Chart 1743 |
| Cessna 210E | 210E | S/N 21058511 – 21058715 | 21058715 | Quantity Per Aircraft 2 | Location Flap Trailing edge Stiffener | Eligibility Chart 1743 |
| Cessna 210F | 210F | S/N 21058716 – 21058818 | 21058818 | Quantity Per Aircraft 2 | Location Flap Trailing edge Stiffener | Eligibility Chart 1743 |
| Cessna T210F | T210F | S/N T210-0001 – T210-0197 | T210-0197 | Quantity Per Aircraft 2 | Location Flap Trailing edge Stiffener | Eligibility Chart 1743 |
Reference only: Please verify the product is eligible for your aircraft before adding to your cart.