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1971 GARDAN GY-20
Starts from the median asking price of 727 comparable Single-Engine Piston listings ($158,000), then adjusts for:
- Year -4 vs comparable listings -6.0%
- Engine time +1,357 hr vs comps -10.9%
- No ADS-B (58% of comps have one) -1.5%
Shown as a range. An estimate from asking-price comparables and FAA supply data — not an appraisal.
Overview
| Make / Model | GARDAN GY-20 |
|---|---|
| Type | Single-Engine Piston |
| Airframe time | — |
| Engine time | 2,178 STOH |
| Avionics / Nav / com radio | TRIG TY91 |
Engines & propellers
Engine
- Time since overhaul
- 780 hrs
Decoded from the seller's description — verify against logbooks.
Description
Total Time: 1659 hours Engine Continental A65, Serial Number T-026450 (hand start) Total Time: 2178 hours SOH: 780 hours Overhauled in 1987 by Wili Bern Shock load inspection performed at TSOH: 416:09 in June 2000 by Cermec-Motor after accident occurred on another aircraft Reassembled in August 2001 Installed on HB-SAC in August 2001 Compression values taken in May 2021: 1: 76/80, 2: 74/80, 3: 76/80, 4: 76/80 Wood Propeller Merville 693B, Serial Number N 17506 TSOH: 288 hours Manufactured in 1962 Overhauled in 2006
Modifications
Wheel Fairings Solar Panel Battery Charger
Avionics
VHF COM Trig TY91 with TC90 Controller Trig TT21 Mode S Transponder with TC20 Controller Artex ME406 ELT (Battery expires 06/2026)
Recommended avionics upgrades
No IFR GPS navigator is listed — a GTN 650Xi is the standard entry point for WAAS/LPV capability.
See prices & suppliers ›No autopilot is listed — a GFC 500 (or S-TEC 3100 / Trio Pro Pilot where the GFC isn't STC'd) adds a modern digital autopilot with envelope protection, subject to model approval.
See prices & suppliers ›No ADS-B is listed — a GTX 345 delivers required ADS-B Out plus In (traffic & weather) in one transponder.
See prices & suppliers ›Suggestions are based on the panel described in this listing; verify STC approval for this make/model before any installation.
Service Difficulty Reports (SDRs)
Checking FAA service difficulty reports…
Airworthiness Directives (ADs)
Checking airworthiness directives…
General
| Year | 1971 |
|---|---|
| Manufacturer | GARDAN |
| Model | GY-20 |
| Registration # | HB-SAC |
| Serial Number | RHR1 |
| Condition | Used |
| Total Time | 1,659 |
Engine
| Engine 1 Time | 2,178 STOH |
|---|
Avionics
| Avionics/Radios | VHF COM Trig TY91 with TC90 Controller Trig TT21 Mode S Transponder with TC20 Controller Artex ME406 ELT (Battery expires 06/2026) |
|---|
Additional Equipment
| Additional Equipment | Wheel Fairings Solar Panel Battery Charger |
|---|
Range from base
Still-air range ring — type an aircraft to change it. Compare aircraft on the Range tool ›
Last flight
Actual flight path from FlightAware for HB-SAC. More flight tracking ›
