Based in Sofia Bulgaria Sofema Aviation Services offers a wide range of services to the Eastern European Aviation Community , within both the Airline OPS and MRO environments. We are independent and provide support, consulting and training across all areas of the business from Post Holder through Quality and Safety to Flight Operational areas. Our Aviation Services are complemented where necessary by our associates to ensure we are able to maintain the necessary skill level and expertise.

Sofema Aviation Services has a straightforward mission -To deliver reliable, quality focused and flexible service on time, every time.

Through the cooperation with Avisa-ee, Sofema Aviation Services are able to offer a substantial range of open, regulatory training courses. Sofema Aviation Services also offers many specialized courses in specific areas of the Aviation Environment. We have a flexible resource which can usually assist in providing a bespoke training specifically tailored to your companies needs. In-company trainings can usually be arranged to be flexible and to meet your operational needs.

With a full service expertise MRO Consultancy Services we are able to We provide full service expertise to address every aspect of your MRO project. With optimised support based on your budget and your implementation requirements we can deliver many flexible options in some cases we can minimize overall implementation costs by utilizing your own resources.

Sofema Aviation Services supports Airlines and MRO’s with Technical Management Supply Chain Personnel and EASA Qualified Certification Engineers, either on a contract basis or as permanent employees.  The challenge of managing contract staff is very specific and we assist with implementation in the most effective way for your organization.

Sofema Aviation Services currently support a number of IT solutions for the Operator and MRO Because of our independence we are able to be selective concerning products we are willing to support. 

Sofema Aviation Services SAS provides a service to its clients and associates to qualify Language Proficiency pass grade for Aviation English Competency.

In particular to confirm that the candidate qualifies at the level of ICAO level 4 or above which is the minimum standard to operate either as an Air traffic Control Officer at International Airports or as a Pilot Flying Commercial Aircraft on international routes.

Sofema Aviation Services   is pleased to provide direct and indirect support to the following areas of your business – Safety Management System,  Quality System,  Operations Environment,  Maintenance Environment,  Audit Support Services, Quality & Safety Audits.

Sofema Aviation Services is able to support you in configuring you ERP Emergency Response Plan. With extensive experience gained over 2 decades of working within the civil aviation environment we are able to work with you to analyse, develop, document, train and test your emergency procedures within the Operational and Human Environments.

EASA has mandated that fuel tank safety training is required for certain groups of maintenance staff. Why was this decision made ? The reason why is described in this article essentially driven by the need to address inherent centre fuel tank safety shortfalls.
What are the implications for operators and maintainers ? The need to have appropriate procedures and in company training is addressed through the Medium of Fuel Tank Safety Training. This required fuel tank safety training is mandatory of all staff who work on aircraft which carry more than 30 passengers or the equivalent size of Cargo aircraft.
What are the time scales involved ?. Essentially the compliance for phase 1 (management staff) has now passed. The compliance for phase 2 staff which includes all maintenance engineers is Dec 2010. Fuel Tank Safety Training including the recommended EASA examination will satisfy the obligation of both Part 145 and Part M organisations.
What does it mean for me as an operator or maintainer ? As an operator you should be satisfying yourself during audit that the Part 145 organisation fully complies with both the regulatory requirements and your Part M requirements. ( A hugely important element). As a Part 145 organisation you should satisfy yourself that you have appropriate Maintenance Organisation Exposition MOE Procedures, Competent and trained maintenance staff to comply with all the regulatory requirements, including the need for recurrent Fuel Tank Safety Training.
Understanding Health and safety issues associated with Nitrogen Enriched Air NEA is also an essential area for the Part 145 Maintenance organisation to manage.
Fuel Tank Safety requirements have come about after probably one of the most comprehensive assessments ever made following the tragic loss of TWA Flight 800 with 212 passengers and 18 crew. TWA Flight 800 crashed at 20.30 on July 17 1996, due to an In flight break up caused by an explosive failure in fuselage. Whilst Initial investigation focuses on terrorism after some 6 months of investigation terrorism was discounted or indeed an external explosion.
The causal factors were attributed to a Fuel tank explosion which itself was induced by system failures.
The investigations surrounding the accident led to many basic design and certification assumptions about installed fuel tank system safety to be substantially revised.
The events following the investigation into the causal factors surrounding the TWA 800 event created something of a shock for the industry, until this time it was not understood that the heated centre fuel tank actually led to a lowering of the safety standard to a level below that which was deemed acceptable. Obviously this was a situation which had to be addressed at the highest levels.
The connection between the discovery of the criticality of the Centre wing Fuel Tank Installation and fundamental design and certification assumptions ultimately had a major impact on in-service continuing airworthiness management and maintenance of aircraft. A global review across many different aircraft types of in-service fuel tank safety data demonstrated that fuel tank safety does not meet acceptable safety standards. It subsequently became apparent that steps had to be taken to redress these issues. Fuel Tank Safety Training is one element of these activities.
One example of a particular outcome was the need for management of the fuel tank related maintenance requirements and associated activities which have become known as CDCCL Critical Design Control Configuration Limitations. The comprehensive understanding of this is addressed during Fuel Tank Safety training.
CDCCL requirements have a direct bearing on the activities of the Part 145 maintenance organisation and the effective oversight by the operators Part M organisation
TWA 800 was not the only incident related to fuel tank safety, There have been a number of Fuel Tank Safety related issues over many years of commercial jet operation. In 1990 on the Ground in Manila Philippines a Boeing 737 belonging to Philippines airlines exploded, due to events surround the Centre Wing Tank, and again in 2001 a Boeing 737 belonging to Thai airways also exploded on the ground at Bangkok airport. The cause was attributed to an explosion in the Centre Fuel Tank Heating of the centre wing tank to temperatures that were higher than anticipated during design were apparent at an early stage, however the actions to be taken to mitigate the safety case were not immediately apparent. The understanding that one of the fundamental issues Heat transfer from externally mounted Air Conditioning Systems (ACS) was not only a large contributor to an explosive condition.
But was something which was going to be extremely difficult to address. A series of trial flights flown to replicate the TWA 800 final hours establishes CWT internal temperatures as high as 145f.(63’C)
Avisa-ee Fuel Tank Safety training which is normally delivered “In company’ address all regulatory issues associated with Fuel Tank Safety and satisfies the mandatory training including examination recommended by EASA. www.avisa-ee.com

office@avisa-ee.com

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