Polish charter carrier Enter Air has contracted JorAMCo for airframe maintenance on four Boeing 737s.
Work includes C-check tasks, skin panel replacements and lap joint inspections for cracks in the fuselage crown area, said the Amman-based MRO provider.
The last item suggests that the contract covers Classic-series 737 aircraft. The US FAA issued an emergency airworthiness directive within days after a structural failure aboard a Southwest 737-300 on 1 April.
The first of Enter Air's aircraft was serviced and returned in April.
The Warsaw-based airline operates six 737-400s and two 737-800s, according to Flightglobal's ACAS database.