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· A full understanding of the safety requirement by the contractor and of the contractor's
commitment to meeting and understanding of these requirements
· Correction of proposed SSP deficiencies.
· A mutual understanding of any safety tradeoffs that may be necessary. Trade-off
parameters include performance, schedule, logistics support, and costs.
The negotiation process is the last chance to insure that all necessary safety program and safety risk criteria
is incorporated in the contract. It permits both the FAA and the contractor to clear-up different
requirement interpretations and implementation conflicts. Just as importantly, the contractor and the FAA
can maximize effectiveness for planned safety program cost expenditures. Delivering System Safety
Assessment Reports (SSAR) or Safety Engineering Reports (SER), for example, in a specific media
format, e.g., a desktop publishing package may be an unexpected cost driver for a company that has
standardized on an office suite such as MS or Corel Office. Similarly, when approval of SARs is
specified, the contractor needs to cost assumed rework. If the assumption is high, the FAA may choose to
forgo approval on early program submittals and substitute comments instead. There are obvious risks
associated with foregoing approval on deliverables.
6.4 Managing Contractor System Safety (Contract Oversight)
Proactive Government participation in the contractor's system safety program is a critical path in achieving
confidence in the effectiveness of the contractors system safety program and accuracy and coverage of
safety analyses. The appropriate issues are:
· Contract direction can only be provided through the Government contracting office.
· Government personnel must provided corrective feedback, as needed, in such a manner
that does not discourage candor and sharing of information. To that end, participation
in frequent Technical Information Meetings (TIMs) and other activities such as
Hazard Record Review Boards is a positive action.
· Formal review with official feedback is primarily provided through Major Program
Milestones (such as a Critical Design Review , CDR) and the contract deliverables,
e.g., S/SHA and SAR.
6.4.1 Major Program Milestones
System Design Review (SDR)/SDR Safety Review
For SDR, the following should be available for review:
· SSPP
· Work breakdown of system safety tasks, subtasks, and manpower
FAA System Safety Handbook, Chapter 6: System Safety Guidelines for Contracting
August 2, 2000
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· Overview of system and mission, including safety-critical systems, subsystems, and
their interrelationship with mission operations
· Proposed support equipment
· Operational scenarios
· Tabulation of hazards identified
· Review of initial checklist.
The following key points should be considered in the review:
· Identification of key safety people in the contractor's organization
· Authority and responsibility of key safety positions
· Key system safety personnel qualifications
· Safety program milestones
· Proposed hazard analysis methods
· Control system for identification, recording, tracking, resolution, and closeout of
problems.
· Contractor staffing and monetary resources.
· The nature of the hazards the applicable to the system application and design. For
example, on a recent program the contractor decided that failure to detect weather
conditions couldn't be a hazard for a ground based system. In this case, the weather
protection system provided information to aircraft so it was a hazardous condition. In
another case, hazard analyses were planned only for hardware and the FAA safety team
leader was concerned about software hazard mitigation.
Minimum requirements for a successful SSP are:
· Contractor's demonstration of capability to perform system safety activities in
compliance with contractual requirements such as tailored MIL-STD-882 and/or the
FAA SSMP.
· Contractor's demonstration of understanding of applicability of safety requirements
and specific hazard identification
Preliminary Design Review (PDR)/PDR Safety Review
This phase occurs early in system development prior to the detailed design process. It measures the
progress and adequacy of the design approach and establishes physical and functional interfaces between
the system and other systems, facilities, and support equipment.
The safety review performed at PDR considers the identified hazards and looks at the intended design
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