Feb 2 (Reuters) -

GE Aerospace said on Monday it is analyzing a

potential durability issue with the ‌GE9X engine that powers

Boeing's ( BA ) 777X.

Company officials cautioned that it ​was too early to draw

conclusions about ‍how significant the issue is.

The ⁠issue stems ⁠from a seal in the engine, Bloomberg News

reported on ‌Monday, citing people ​familiar with the matter.

Boeing ( BA ) CEO Kelly Ortberg disclosed the matter last ⁠week

during the company's fourth-quarter ‍earnings ​conference call,

saying the company still expects to begin deliveries in 2027.

The 777X is ‍already six years behind schedule, and Boeing ( BA )

has taken

more than $15 billion in charges

on the program.

Boeing ( BA ) declined to comment on Monday.

The planemaker continues 777X flight testing. Yet ​so ‍far in

2026, only two of the five test aircraft have flown, according

to ​flight records on FlightRadar24, a flight-tracking website.

The engine,

GE9X, was certified

by the U.S. aviation safety regulator in 2020.

The finding could require the seal to be redesigned and

retrofitted during future ​maintenance overhauls, the Bloomberg

report said.