Oct 28 (Reuters) - Russia has flown a second prototype

of its MC-21 medium-haul passenger jet built with domestic

components, the industry ministry said on Tuesday, as sanctions

on foreign components stall production and high interest rates

crimp investment.

Battling these obstacles, the Russian aircraft industry

proved able to deliver by August just one of 15 jets planned for

this year.

The MC-21 took off from the Irkutsk aviation plant operated

by Yakovlev, a part of United Aircraft Corp, within state

conglomerate Rostec, according to images the industry ministry

posted on the Telegram messaging app on Tuesday.

The flight tested newly Russian-made onboard systems and

PD-14 turbofan engines, the ministry added, as opposed to

earlier prototypes that combined Russian and foreign components.

The MC-21, carrying about 175 passengers in a two-class

layout, is key to plans to replace jets from Western planemakers

Airbus and Boeing ( BA ) that Russian airlines struggle to service

under the sanctions following Moscow's 2022 invasion of Ukraine.

The version of the MC-21 with imported parts was lighter

than the first, which had limited range and fuel burn, making

airlines cautious, a Russian aviation source told Reuters in

August.

Delivery dates have slipped repeatedly since Rostec, which

oversees production of the Superjet-100, Tupolev Tu-214,

Ilyushin passenger planes and the new Yakovlev MC-21, told

Reuters that Russia would produce its own passenger planes.

First deliveries of the MC-21 are expected at the end of

2026, with Rostec planning to ramp up output to 36 a year by

2030.