✦ GTF Advantage: Double the Time on WingNarrow moat

RTX (RTX) — the future bets

The GTF Advantage is meant to double the time the engine stays on the wing, which wins back airlines and, per engine, reduces Pratt's aftermarket.

The GTF's problem was never efficiency; it was time on wing. The GTF Advantage is Pratt & Whitney's answer. It was certified by both the FAA and EASA in 2025, "increasing takeoff thrust by 4 to 8 percent and reducing fuel consumption by up to an additional 1" percent1. On the second-quarter 2026 call Calio said it would "double the time on wing performance" and reach full production cutover by 20282.

GTF Advantage improvements over the base engine (%)+4%Takeoff thrust, low end+8%Takeoff thrust, high end-1%Fuel burn, up toRTX Form 10-K FY2025; time on wing doubled per Q2 2026 call
More thrust, a little less fuel, twice the time on wing.

Time on wing is the measure airlines care about after the recall. An engine that stays on the aircraft twice as long needs half the spare engines, half the shop visits and far fewer groundings. That is the argument Pratt & Whitney needs for the next A320neo orders, where the airline chooses.

The first aircraft powered by the GTF Advantage was delivered to United Airlines in September 20263.

There is a trade inside the bet. Fewer shop visits per engine means less aftermarket revenue per engine over its life, the income Pratt & Whitney discounted the engine to win. A more durable engine is better for the customer and, per engine, less lucrative for the maker.

The Advantage matters most on the A220, where the GTF is the only engine. Every A220 customer, including AirAsia's 150-aircraft order4, will fly the engine for decades regardless of the contest on the A320neo; a more durable engine makes those fleets cheaper to run and those customers more likely to order again.

The bet pays if it wins share back. Pratt & Whitney's commercial original-equipment sales fell 8% in the second quarter of 20265; a return to growth once the Advantage is in full production would mean airlines are choosing it again.

Moat trajectory: Widening

Certified in 2025; first delivery September 2026; full cutover 2028.

The number that tests this moat
Reported
GTF commercial engine orders momentum, latest quarter
Over $20bn of RTX commercial OE and aftermarket orders (Q2 2026)

Whether airlines are ordering again; a fall with the Advantage available would mean the reputation has not recovered.

Source: RTX Q2 2026 earnings call transcript ↗
References
  1. ReportedIt was certified by both the FAA and EASA in 2025, "increasing takeoff thrust by 4 to 8 percent and reducing fuel consumption by up to an additional 1" percent.
    RTX Form 10-K for fiscal 2025 - Item 1 business: the three segments and their products, the GTF family powering more than 2,600 aircraft for over 90 operators, the F135 as sole-source engine on all F-35 variants, GTF Advantage certification, the IAE collaboration shares, employees (about 180,000 in 52 countries, 69% in the U.S.) and the divested businesses. — FY2025 · publ. 6 February 2026 · source ↗
  2. ReportedOn the second-quarter 2026 call Calio said it would "double the time on wing performance" and reach full production cutover by 2028.
    RTX second-quarter 2026 earnings call transcript (The Motley Fool) - Raytheon bookings and book-to-bill, GTF aircraft-on-ground and MRO output, munitions output, framework agreements, the defence budget request, GTF Advantage, Collins margin plans and segment outlook - commercial: GTF fleet, maintenance output, aftermarket, orders, Collins and the outlook. — Q2 2026 · publ. 24 July 2026 · source ↗
  3. ReportedThe first aircraft powered by the GTF Advantage was delivered to United Airlines in September 2026.
    RTX Corporation (RTX) market data - $189.40 a share at the close on 25 September 2026, market cap $255.27B, revenue (ttm) $93.50B, net income $7.74B, EPS $5.68, 23 analysts with a $234.82 target, 52-week range $155.64-$226.88. — September 2026 · publ. 25 September 2026 · source ↗
  4. ReportedEvery A220 customer, including AirAsia's 150-aircraft order, will fly the engine for decades regardless of the contest on the A320neo; a more durable engine makes those fleets cheaper to run and those customers more likely to order again.
    RTX second-quarter 2026 earnings call transcript (The Motley Fool) - Raytheon bookings and book-to-bill, GTF aircraft-on-ground and MRO output, munitions output, framework agreements, the defence budget request, GTF Advantage, Collins margin plans and segment outlook - commercial: GTF fleet, maintenance output, aftermarket, orders, Collins and the outlook. — Q2 2026 · publ. 24 July 2026 · source ↗
  5. ReportedPratt & Whitney's commercial original-equipment sales fell 8% in the second quarter of 2026; a return to growth once the Advantage is in full production would mean airlines are choosing it again.
    RTX second-quarter 2026 earnings call transcript (The Motley Fool) - Raytheon bookings and book-to-bill, GTF aircraft-on-ground and MRO output, munitions output, framework agreements, the defence budget request, GTF Advantage, Collins margin plans and segment outlook - commercial: GTF fleet, maintenance output, aftermarket, orders, Collins and the outlook. — Q2 2026 · publ. 24 July 2026 · source ↗
Sources
Generated September 28, 2026