Pristine, efficient, fast, turn-key Comanche LoPresti 260 GTO, with every speed mod and glass panel. Always hangared, two owners since 2001. Complete logs since 1965.

Registration Number

N8684P

Serial Number

24-4132

Manufacturer year

1965

Make/Model

Piper Comanche 260

Airframe

Total Time 7,940 Range 1,250 NM Max Takeoff Weight 2,900 lb Useful Load 1,017 lb Fuel Capacity Volume 90 gal Complete Logs Yes Speed Mods • LoPresti Speed Mods Wholly Wow Cowl • Synchro-pulse Scimitar 3-blade Hartzell Prop • LoPresti Flap-Gap seals • “Hubba” Wheel hub cap covers • Main Landing Gear Fairings • Knots-2-U Wing Root Fairings • Wing Root Fillets • Bracket Fairings • Rudder Gap Seals Airframe Notes • 1,000 Hr Gear service performed by Kristin Winter, 2022 • New landing gear push​/​pull conduits installed by Kristin Winter, 2022 • Kosla shoulder harness seat belts (pilot & co-pilot) • ½" Single Piece Windshield • ¼" side windows — Great Lakes Aero Grey Tinted Windows • Precise Flight Speed Brakes • Precise Flight Pulse-Lite System landing lights • Whelan LED Landing Lights • Whelan LED Strobe lights (Wing Tips & Tail x2) • Fuel Bladder tanks — new Fuel Cells x4 — 2009 & 2011 & 2021 • Main & Nose gear Teflon covered wiring (ComancheGear) w​/​Squat switches • ComancheGear Fuel Selector disconnect kit w​/​Wafer switch • Piper Door-Latch Kit • Medeco Door Locks (baggage + main door) • Piper External Power Plug (aft of baggage door) • Piper Nose wheel Shimmy dampener, new 3​/​2017 • Piper stall warning switch (new) 3​/​2017 • Piper Trim Cable, (new) 3​/​2018 • Bogert Battery Box • Bogert Copper battery cable kit, • Concorde RG35 AXC Battery, new 10​/​2025 • Plane-Power Alternator & Voltage Regulator, new 6​/​2026 • Australian Tail Horn (removes Tail AD), May 2019 • JAS Wing Tips w​/​Whelan Strobes, May 2019 • CIES Magnetic Fuel Senders x4 & Aerospace Logic 4-tank display, 6​/​2020

Useful Load

Max Takeoff Weight 2,900 lb Useful Load 1,017 lb Fuel Capacity Volume 90 gal

Engine Details (e.g. Total Engine Time; Suggested TBO; Hours Remaining)

Make ​/​ Model LYCOMING Serial Number L1464-48 Horsepower 260 HP Engine Time 2,295 SMOH Time Between Overhaul 2,000 Engine Model IO-540-D4A5 (1A15 Stroke = 4.375 in; Bore = 5.125 in) Aircraft Listing · N8684P Compression at last annual: #1 76​/​80, #2 74​/​80, #3 73​/​80, #4 75​/​80, #5 76​/​80, #6 78​/​80 Engine Notes • Skytec lightweight NL Starter • LoPresti external oil cooler • Engine OH — JAS “Ultra” Blue-Print Spec (Johnson Aircraft Systems, Tulare, CA) with Millennium Cylinders, 2008 — Tach “0” at Overhaul • Camshaft and DLC Lifters — Top OH 11​/​2015 • GAMI fuel injectors (with JPI830 engine analyzer) • Cannon Plug Kit (Comanche Gear, Matt Kurt), 2012 • EIS Electro-Air Electronic Ignition System w​/​Tempest fine wire plugs, leads replaced 2022 (new coil, 2018) • Alternate Air Box — Rebuild, 3​/​2017 • Dual Exhaust: Mufflers new x2 3​/​2018 • Lord Mounts — New 2018 (Clifton Aero)

Propulsion

Manufacturer HARTZELL Prop Overhaul Time 2400 Number of Blades 3 Blade Composition Aluminum Swept Blade Propellers Yes Prop Notes • LoPresti Hartzell Synchro-Pulse Scimitar 3-blade prop, 1996. Overhaul, 2009 • Blades x3: S​/​N JO6533 (DES F7590) • LoPresti Hartzell Synchro-Pulse Scimitar 3-blade prop, 1996. Overhaul, 2009 • Prop Governor PCU-5000 — (new) 9​/​22​/​2016 Modifications ​/​ Conversions Modifications ​/​ Conversions LoPresti Wholly Cowl and all speed mods

Performance Specs

Complete LoPresti speed package, Precise Flight Speed Brakes, Glass Panel... As for the engine time: The thing is, I don't see the logic of replacing an engine that's statistically safer for the next 500 hours at least then it's replacement would be in the next 200 hours. For me, 500 hours is like 10 years of use. I change the oil filter a bit more frequently to keep an eye out for any metal; have oil analsysis done on each change, upload JPI engine data to look for signs of a problem, and use the very best shops for my annuals. To me, that's the lowest risk approach I can do. Per Grok: Regarding new and reman engines: risk is highest shortly after manufacture, rebuild, or overhaul, then drops. Infant-mortality window (0–200 hours) The first 200 hours after an engine is built, rebuilt, or overhauled is the highest-risk period for sudden, catastrophic failure. This is the classic infant-mortality phase. • Manufacturing or material defects (especially crankshafts) and assembly errors typically surface here. • Documented IO-540 ​/​ AEIO-540 ​/​ TIO-540 crankshaft failures have occurred at ~100–200 hours SMOH or since new, often from forging issues, improper heat treatment, or incorrect crankshaft installation. Lycoming noted an average of 3–4 crankshaft failures per year across a large fleet of similar parts, with many clustered early. • If a crankshaft survives the first 200 hours, Lycoming and analysts consider it likely to last far beyond TBO (fleet-average crankshaft life often cited at 6,000–10,000 hours). • Other early failures include spun bearings (assembly error), magneto​/​drive issues, and quality-control problems. Regarding ‘high time’ engines: Far fewer engines operate in this range because most are overhauled or retired at or before TBO. Raw accident counts in the 2,500–3,000 hour band are therefore very low. • When high-time failures occur, they are more often tied to wear (cam​/​lifter spalling, valve​/​guide issues, cylinder problems), corrosion from inactivity, oil-starvation events, or maintenance​/​operational factors rather than sudden bottom-end (crankshaft​/​case) failure. • Engines that reach this age with good oil analysis, borescope inspections, and regular use tend to be the survivors; the per-hour catastrophic-failure risk for a well-monitored engine is generally lower than in the first 200 hours.

Avionics

Flight Deck Manufacturer ​/​ Model ASPEN AVIONICS EV2000 MAX Other Avionics 1 AVIDYNE IFD540 Other Avionics 2 AVIDYNE IFD540 Other Avionics 3 CENTURY FLIGHT SYSTEMS Other Avionics 4 AVIDYNE Other Avionics 5 AVIDYNE ADS-B Equipped Yes In & Out WAAS Yes LPV Yes SVT Yes EVS Yes Active Traffic Yes Terrain Warning System Yes Avionics ​/​ Radios • Ron & John Custom Panel (Custom silk screen Placards) — 2001 • Avidyne dual IFD540’s: FMS GPS​/​MFD​/​Nav-Comm • AXP240 Audio Intercom (4-place) • AXP340 Transponder w​/​ADSB compliant 1090-OUT • TAS605A VeriTAS (Ryan TCAD) ADSB 1090-IN + Active Traffic-IN • SkyTrax100-B — TIS & FIS ADSB 980 IN Wx & Traffic • Aspen MAX2000 (PFD1000 & MFD1000) — 11​/​2020 w​/​ext. battery backup, PFD — Internal, Battery, MFD • AOA — PFD • Synthetic Vision PFD & MFD • Traffic & Wx Unlock — Aspen ↔ SkyTrax100B • JPI-830 6-cylinder Engine Analyzer • Century 2000 full 2-axis AP w​/​Electric Trim (OH, 12​/​2020, serviced 11​/​2022) • Pilot-side Yoke Century AP Electric Trim, 2001 • EA100 — Century AP interface (replaced new, 8​/​2020) • Aspen ACU (replaced new, 11​/​2020) • Ashby Glare Shield w​/​fiber-optic lighting • Electronics International Volt-Ammeter, 2001 • SC-5 Clock, 3​/​2021 • Security Lock (starter circuit disconnect plug) • Precision Aviation Vertical Card Compass • Aerospace Logic 4-tank Fuel quantity Display, 6​/​2020 • UAvionics AV30-c Standby electronic AI (fully interfaced), 3​/​2021

Interior/Exterior; Additional Equipment

Exterior Year Painted 1996 Exterior Notes • Touchup paint work, including repaint Wing-Walk, upper cowl, landing gear doors, landing gear forks, and all windows with new silicone seal — 5​/​2017 (silicone seal now again needs touch-up) Interior Year Interior 2012 Number of Seats 4 Configuration Passenger Interior Notes • Rosen Visors, 2001 • Rams Horn Yokes w​/​dual PTT buttons, 2001 • New, 2012 (Aircraft Interior Design, Inc, Mesa AZ) • Red aviator nylon carpet with Skandia Carpet Pads • Reconstructed foam bucket seats, covered with all leather & hand embroidered Comanche Insignia on all seats • Ultra-Leather headliner, hat rack & baggage compartment + detachable custom rear seat Ultra-Leather dogcover • Built-in custom arm rest cup holders at all 4 seats • AC Vents in rear hat-rack (for optional baggage area AC connection) • Custom sound-proofing • Bob Fields Inflatable Door Seal • Pilot & co-pilot custom UltraLeather headset hangers • All windows ¼ in. New side windows x4, Great Lakes (gray tinted), 2012 • Single piece ½ in. front window, 1996

Maintenance Details

Maintained to the highest standards. Annuals going back at least 9 years have been performed by some of the top Comanche expert shops around: Webco, Tim Talley at Clifton Aero (x4), Kristin Winter (x2), and Danny Stark at Twin Oaks (x2). Kristin Winter did the 1,000 hour gear AD, as well as replaced the landing gear conduits in 2022. Digitized logs available for review.

Additional Notes

Have decided it's time to sell my 1965 Comanche 260 airplane. I've owned it since 2021; previous owner owned since 2001. Full logs (digital logs available), no accidents. Kristin Winter did the log review of it for me when I purchased... Recently had Kristin Winter do the 1,000 hr gear AD and replace the conduits. Next annual is due in October, and is scheduled to be with Twin Oaks (Danny Stark) outside of Portland, Or. Was thinking if a buyer is in western US, may make sense to combine their pre-buy with the next annual... so that's why I'm opting to list before the annual. If any questions or interest, please let me know. Thanks.