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OSA kickoff 4D-TRAD. SG meeting at MUAC 8-12June 2009. OSA Process: Details SPR/Annex A. Operational Service Description. OHA. ASOR. Environmental Conditions. System State. EMM. OE SC4. Pe. BC. SO. OE SC2. Pe. BC. OH. LWCE. OE SC3. BC. Pe. OE SC1. IMM. Pe. Fault Tree.

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Osa kickoff 4d trad

OSA kickoff 4D-TRAD

SG meeting at MUAC

8-12June 2009


Osa process details spr annex a
OSA Process:Details SPR/Annex A

Operational Service

Description

OHA

ASOR

Environmental Conditions

System State

EMM

OE

SC4

Pe

BC

SO

OE

SC2

Pe

BC

OH

LWCE

OE

SC3

BC

Pe

OE

SC1

IMM

Pe

Fault Tree

Event Tree

Likelihood

of effect


Oha process

step 3

step 2

step 1

step 4

Determine

Pe

Allocate

SC to effects

Allocate SO

Identify

Operational hazards

Pe

Safety

Target

Safety

Objective

S

Pe4

Effect 1

SC4

ST4

S

F

Pe2

Effect 2

ST2

SC2

Most stringent SO

Effect 3

Pe3

ST3

SC3

S

F

Effect 4

Pe1

ST1

SC1

F

F

F

F

Hazard

SCS + RCS

Effects

The effect, associated with most stringent SO = WCE of SMS Process

OHA Process


Asor process

OHA

step 5

step 6

step 7

step 4

Develop

Fault Trees

Derive Safety Requirements

Allocate SO

to BCs

Allocate SO

Safety

Objective

(BC1, SOaportion1)

BC1

(BC3, SOaportion3)

BC3

(BC2, SOaportion2)

BC2

(BC4, SOaportion1)

BC4

Hazard

ATM System

Elements

Causes

SR

list

ASOR Process


Faa ato sms process

step 3

step 1

step 2

step 4

Identify

Operational hazards

Determine

LWCE

Determine

SC of WCE

LWCE

S

Effect 1

BC1

S

F

BC3

Effect 2

SC of WCE

BC2

Effect 3

S

BC4

F

Hazard

Effect 4

ATM System

F

F

F

F

Elements

Risk matrix

SCS

Causes

Effects

LWCE: Probability that the hazard leads to a WCE

FAA-ATO SMS Process


78 214 osa approach
78/214 OSA Approach

RISK

ST

Combined

LWCE & SC

LWCEs

SOs

LWCE

SO

Pr

SR

Estimated Probabilities

SRs

SR

SR

Pr

Pr

Definition

Verification


4d trad osa

OHv

OH1

4D-TRAD OSA

4DTRAD service

Planning

4DTRAD OSA

application

OH1

OH1

OH1

CPDLC OSA

ADS-C OSA

GND-GND OSA

OHy

OHx

OH21

Strategic

Interventions


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