Why are the Seminole's propellers counter-rotating?

The PA-44's right engine uses the Lycoming LO-360 reverse-rotation variant of the standard O-360, so both propellers rotate in opposite directions. This eliminates the critical-engine asymmetry that normally complicates training on conventional twins (where the left engine, with its descending blade closer to the fuselage, is the critical engine on engine-out scenarios). The counter-rotating layout is a deliberate design choice that simplifies FAA multi-engine instruction.

Is the Seminole a complex aircraft?

Yes. The PA-44 has retractable gear, constant-speed propellers, and adjustable flaps — meeting the FAR 61.31 complex definition. At 180 hp per side it does not meet the high-performance threshold.

Is the Piper Seminole still in production?

Yes. Piper Aircraft continues to build new PA-44-180 Seminoles at Vero Beach, Florida — predominantly to FAA Part 141 schools and university aviation programs. The current new-build configuration ships with Garmin G1000 NXi avionics.

How does the Seminole compare to the Diamond DA42?

The PA-44 Seminole is the dominant US ME trainer; the Diamond DA42 Twin Star is the dominant European ME trainer. The Seminole burns 100LL through twin Lycoming O-360s; the DA42 burns Jet-A through twin Austro AE 300 diesels with FADEC single-lever control. Both are complex aircraft with counter-rotating-equivalent low critical-engine asymmetry. Choice between them often comes down to fuel infrastructure (Jet-A vs 100LL) and avionics-generation preference.

Piper Aircraft

PA-44 Seminole

Multi-engine piston · Multi-engine trainer · 1980s–1990s

Photo: KGG1951 via Wikimedia Commons · CC BY-SA 3.0

Power: 360 hp
Cruise: 162 kt
MTOW: 3,800 lb
Range: 940 nm
Fuel: 100LL avgas

🇺🇸Specs shown in Imperial.

Performance

Cruise speed (Vc)162 kt
Never-exceed speed (Vne)202 kt
Stall (landing config) (Vs0)57 kt
Climb rate1,340 fpm
Service ceiling17,100 ft
Range940 nm
Endurance6 h
Takeoff roll1,400 ft
Landing roll1,490 ft

Weights

MTOW3,800 lb
Empty weight2,430 lb
Useful load1,370 lb
Baggage capacity200 lb

Dimensions

Wingspan38.6 ft
Length27.6 ft
Height8.5 ft
Cabin width41.5 in

Powerplant

Engine 1Lycoming IO-360-B1G6 — 180 hp · 100LL · 9.5 gph
Engine 2Lycoming LIO-360-B1G6 (counter-rotating) — 180 hp · 100LL · 9.5 gph
Total horsepower360 hp
Primary fuel100LL avgas
Unleaded pathG100UL eligible (STC available)

Cockpit & avionics

Cockpit typeglass
Autopilot commonly availableYes
Typical packages
- Garmin G1000 NXi— modern (current new-build)
- Garmin G500 / GFC 600 retrofits— common modern retrofit on legacy airframes
- Six-pack analog with KFC-150— 1980s airframes as delivered

Certification

RegulatoryFAR Part 23 (CAR 3 origin) · EASA CS-23
Certified rolesNormal category
IFRYes
Spin approvedNo
Aerobatic-categoryNo
TailwheelNo
Complex (FAR 61.31)Yes
High-performance (FAR 61.31)No

Why is the PA-44 Seminole popular?

Structured popularity-driver evidence. Each axis below carries one factual statement; we don't grade, the facts speak.

Industry network effects

Most common multi-engine trainer at FAA Part 141 universities and integrated CPL programmes in the US — ATP Flight School, Embry-Riddle, UND, and Purdue all run Seminole fleets at scale.

Regulatory fit

Counter-rotating propellers (right engine has the LO-360 reverse-rotation variant) eliminate the critical-engine asymmetry and simplify FAA multi-engine training. Retractable gear and constant-speed propellers also place the type in the FAR 61.31 complex category.

Operating economics

Twin 180 hp Lycoming O-360 / LO-360 burn 100LL at roughly 9.5 gph per engine in cruise — modest direct fuel cost for a piston twin trainer.

Parts and MRO ecosystem

Continuous current Piper production at Vero Beach, Florida means new airframes are factory-supported; Lycoming O-360 parts and overhaul ecosystem is among the deepest in GA.

Fuel future-proofing

Lycoming O-360 family is on Lycoming's G100UL compatibility path, giving the active Seminole fleet a path off 100LL without engine swap.

Before you buy more aircraft

The next airframe is rarely the highest-leverage move.

Flight school revenue is a function of three things — utilization, dispatch reliability, and student progression — that multiply rather than add. Most schools running below 850 hours per aircraft per year have hidden capacity worth more than the next purchase, already paid for and sitting on the ramp.

Read: Why buying more aircraft probably won't grow your school

Operations

Record hours, no profit

Where margin actually leaks when the schedule looks full.

Strategy

The three hurdles to profitability

The structural barriers most expansion plans miss.

How flight schools track this aircraft in Aviatize

Schools running PA-44 fleets typically configure each airframe in Aviatize with two Lycoming engines as separate child components for independent TBO and overhaul-reserve tracking; gear-actuator and propeller cycles are tracked separately. Multi-engine currency, IPC, and ME-IR proficiency are commonly modelled as per-pilot validation rules that gate booking creation when expired.

Smart Planning & Booking Training Management Maintenance Control Billing & Payments Compliance & Auditing

Weighing up the numbers? Model the operating economics of a PA-44 Seminole fleet with our free profitability calculator — no signup required.

Editorial confidence

Medium confidenceLast reviewed 2026-05-26

2 primary sources cited. Spec data is partially attributed; some operating details are editorial synthesis pending additional research.

Sources

Primary sources are POH / TCDS / manufacturer pages; derived sources record where Aviatize editorial synthesis is layered on top.

Primary sourcePOH·Retrieved 2026-05-26
Piper Aircraft
https://www.piper.com/model/seminole/
Piper Aircraft Seminole product page. Facts verified on this page on 2026-05-26: 2x Lycoming IO-360-B1G6 fuel-injected engines, flat-rated 180 hp each (earlier-production Seminoles used the carbureted Lycoming O-360-E1A6D — current factory build is the fuel-injected IO-360-B1G6); counter-rotating right engine (LIO-360-B1G6); usable fuel 108 US gal / 409 L; wingspan 38 ft 6 in / 11.7 m; max cruise speed 162 ktas; max range 940 nm / 1,741 km; Garmin G1000 NXi avionics standard with single 10.4-inch GDU 1050 PFD and MFD.
Primary sourceFAA TCDS·Retrieved 2026-05-26
Federal Aviation Administration (FAA)
https://drs.faa.gov/browse/TCDS
FAA TCDS A19SO covers PA-44 variants.
Editorial synthesisAviatize-internal·Retrieved 2026-05-05
Aviatize editorial
Entry authored by Aviatize from accumulated industry knowledge cross-referenced against the primary sources cited above. Specific fleet figures, fleet wins, and recent production status changes are research-backlog candidates and should be verified against primary sources before flipping verified: true.

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