REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

TECHNICAL PROCEDURES FOR REPAIRS OF CORROSIVE DAMAGES ON G4-B AIRCRAFT STRUCTURE

Sonja Đurković

Aviation Parts Service d.o.o, Beograd, sonja.djurkovic@yahoo.com

Vladimir Gobeljić

Utva Avio Industrija u restrukturiranju, Beograd, gobelja@gmail.com

Mirjana Grbić

Utva Avio Industrija u restrukturiranju, Beograd, mirjanamgrbic@gmail.com

Abstract: During the life time extention overhaul, on detailed overview of G4-B aircraft structure, certain damages of structure are noticed. Most of this damages are caused by corrosion, which was expected, becouse of tropical weather with long monsun periods in corelation with salt athmosphere in coastal area where aircrafts were during its life time. This paper describes different solutions for repair of structural damages depended on location of damage, level of damage and size of damaged structure. In accordance with this parameters we have different repairs, such as: replacement of damaged element, reconstruction of damaged assembly,  repair and reinforcement of integral structure. Some damages of structure are identical on all G4-B aircrafts, which make them subject of this paper covering in the same time application of all three previously mentioned solutions for repair.

Key words: life span, overhaul, corrosion, technical procedure, aircraft structure, damage, repair.