CFM LEAP engine shortage delays deliveries

Jet deliveries are getting held up by the part that matters most — the engines. That sounds obvious, but in commercial aviation the bottleneck is often somewhere stranger: seats, avionics, fuselage sections, certification paperwork. Right now, though, the constraint is much more concentrated. CFM International’s LEAP engine family has become so central to the Boeing 737 MAX and a big share of the Airbus A320neo market that any stumble in LEAP output ripples straight into airline fleet plans, including in the Gulf. (flightglobal.com) (aerospaceglobalnews.com) ### What exactly is the LEAP problem? LEAP is the narrowbody workhorse built by CFM, the GE Aerospace-Safran joint venture. The 737 MAX uses the LEAP-1B exclusively, and a large slice of A320neo-family jets use the LEAP-1A. So when LEAP deliveries slow, Boeing and Airbus can both end up with fewer handovers to airlines even if the airframes themselves are largely ready. ### Did output actually fall? Yes — and that is the key fact underneath the shortage story. CFM delivered 319 LEAP engines in the first quarter of 2025, down 13% from 367 a year earlier. (simpleflying.com) Safran tied that to supply-chain pressure, while industry reporting also pointed to the rollout of a durability fix on the LEAP-1A as part of the near-term drag. ### Why does that hit aircraft deliveries so hard? Because an unfinished airplane without engines is basically a very expensive shell. Airbus had already been dealing with growing numbers of completed-but-undeliverable “gliders” — aircraft built and waiting on engines. (simpleflying.com) That is the cleanest sign that propulsion capacity can outrank final assembly as the real pacing item. ### So is this mainly an Airbus problem or a Boeing problem? Basically both, but in different ways. Boeing is tied entirely to LEAP on the 737 MAX, so any engine shortage goes straight into MAX timing. (flightglobal.com) Airbus has more diversification because some A320neo-family aircraft use Pratt & Whitney GTF engines instead, but that is not much of an escape hatch when Pratt has had its own supply and durability problems. ### What about Gulf airlines specifically? The broad point is right, but some of the named-airline framing floating around is sloppy. (aerospaceglobalnews.com) Riyadh Air’s launch delay has been tied to late Boeing aircraft, especially 787s, not a public, airline-specific LEAP shortage disclosure. Emirates itself is mostly a widebody carrier; the narrower-body pressure point in Dubai is more directly visible at flydubai, which said Boeing missed all 14 MAX deliveries scheduled for 2024 and forced it to lean on leased older 737-800s. ### Has CFM caught up at all? Somewhat, yes. (money.usnews.com) Safran’s 2025 results show LEAP deliveries rebounded strongly later in the year — 511 in Q3 and 1,802 for full-year 2025, up 28% from 2024. So this is not a story of permanent collapse. It is a story of a system running so tight that even a temporary dip can scramble airline plans for months. ### Why does this matter beyond a few delayed planes? Because narrowbody growth is the backbone of airline expansion. If engines arrive late, route launches slip, old jets stay longer, leasing costs rise, and fast-growing carriers lose flexibility. (agbi.com) The catch is that demand has not softened much — so every missing engine matters more than it would in a weaker market. ### Bottom line? The real story is not just that some Gulf carriers face delays. It is that one engine family became so dominant that its production tempo can now set the delivery pace for the world’s two biggest jet programs. (safran-group.com) That is the bottleneck to watch. (boeing.com)