MSG-3 ZONAL MSG-3 ZONAL
Sep 16, 2015
MSG-3 ZONAL MSG-3 ZONAL
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
PURPOSE PURPOSE
The Zonal Analysis occurs after the Systems & Powerplant, L/HIRF and Structural analyses are concluded. The Zonal Analysis completes the other analyses.
CONCEPT: Comprises visual inspections, designed per zones, to check for general conditions and safety of several systems components and structural items located in the related zones.
OBJECTIVE: Evaluate some specific items, such as duct lines, wiring, other structures, etc which can contribute to a possible failure.
RESULT: Results in a series of general visual inspections (GVI) requirements and, IF NECESSARY, detailed inspections requirements (DET) or GVI stand alone.
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL TASK TYPE ZONAL TASK TYPE D
ET
D
ET
AN INTENSIVE EXAMINATION OF A SPECIFIC ITEM LIGHTING IS NORMALLY SUPPLEMENTED
MAGNIFYING LENSES ARE USED
ELABORATED ACCESS
AN INTENSIVE EXAMINATION OF A SPECIFIC ITEM
LIGHTING IS NORMALLY SUPPLEMENTED
MAGNIFYING LENSES ARE USED
ELABORATED ACCESS
GV
I G
VI LOOK FOR OBVIOUS DAMAGE
MADE WITHIN TOUCHING DISTANCE
MADE UNDER NORMALLY AVAILABLE LIGHTING CONDITIONS
LOOK FOR OBVIOUS DAMAGE
MADE WITHIN TOUCHING DISTANCE
MADE UNDER NORMALLY AVAILABLE LIGHTING CONDITIONS
GV
I S
T
GV
I S
T
GVI NOT PERFORMED AS PART OF A ZONAL INSPECTION
FOR A DEDICATED ASSEMBLY OR COMPONENT
GVI NOT PERFORMED AS PART OF A ZONAL INSPECTION
FOR A DEDICATED ASSEMBLY OR COMPONENT
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
AIRCRAFT ZONING AIRCRAFT ZONING
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ITEM OF ANALYSIS ITEM OF ANALYSIS
UNIFORM SOURCE OF
DAMAGE
EACH ZONE IS COVERED
BY JUST ONE ITEM OF
ANALYSIS
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
Zonal Analysis Zonal Analysis
Systems & Structures
Installed
Systems & Structures
Installed
Access Doors and
Panels
Access Doors and
Panels
Zonal Safety and
Maintainability
Assessment
Zonal Safety and
Maintainability
Assessment
Zone Activity Zone Activity
Transferred Tasks from
Systems & Power
Plant, Structural and
L/HIRF analysis
Transferred Tasks from
Systems & Power
Plant, Structural and
L/HIRF analysis
Aircraft Zoning Aircraft Zoning
ZONAL ANALYSIS INPUTS ZONAL ANALYSIS INPUTS
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL ANALYSIS INPUTS ZONAL ANALYSIS INPUTS
Zone identification number(s)
Zone side (external/internal), including the references
Zone title
Zone boundaries
Zone illustration
Installed Equipment and Structures
Access illustrations
L/HIRF protection features
Wire bundle installation
Possible combustible materials in zone
Operational activity, also including summary of Systems & Powerplant,
Structure and L/HIRF tasks with the respective intervals, in the zone
Remarks
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
Overview of the MSG-3 Zonal Analysis
Standard Zonal Analysis Procedures
Enhanced Zonal Analysis Procedures
MSG-3 Zonal Analysis Example
CONTENTS
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
STANDARD ZONAL ANALYSIS
DENSITY: the density rating indicates the degree of clustering in
the zone.
IMPORTANCE: this is a measure of how important the various
components in the zone are to the safety and/or economical
operation of the aircraft.
EXPOSURE: this is a measurement of the degree to which the
zone is subjected to temperature extremes, vibration, atmospheric
exposure, and the possibility of accidental damage to systems or
structure.
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
STANDARD ZONAL ANALYSIS - DENSITY STANDARD ZONAL ANALYSIS - DENSITY
LOW
Bottom rear area of Cargo Compartment, CFI
bottom, CFII bottom
HIGH
CF II Bottom - Main Landing Gear Wheel Well Side
Pylon, Inlet Cowl, Fan Cowl and Aft Core
Cowl, Thrust Reverser and Engine
VERY LOW
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
STANDARD ZONAL ANALYSIS - IMPORTANCE STANDARD ZONAL ANALYSIS - IMPORTANCE
Wing Main Box from YA 1380 to 10241
HIGH
RAT Compartment
MODERATE
LOW
FWD Fus. Front Area FWD Partition and Floor area
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
STANDARD ZONAL ANALYSIS - EXPOSURE STANDARD ZONAL ANALYSIS - EXPOSURE
Fwd Fuselage near door including
Galley and Toilet areas
HIGH
Nose Landing Gear, Nose Landing Gear
Doors and Nose Landing Gear Bay
HIGH
Wing Stub
VERY LOW
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
PROPOSED INTERVAL OF ZONAL TASK: 12,000FH
STANDARD ZONAL ANALYSIS INTERVAL SELECTION STANDARD ZONAL ANALYSIS INTERVAL SELECTION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
To be a candidate for the zonal program, these are the requirements that must be fulfilled:
System & Powerplant System & Powerplant
Type: GVI and
CAT: 6,7 or 9 and
Interval: > 6,000 FH*
Type: GVI and
CAT: 6,7 or 9 and
Interval: > 6,000 FH*
L/HIRF L/HIRF
Type : GVI and
Interval:> 6,000 FH*
Type : GVI and
Interval:> 6,000 FH*
Structures Structures
Type: GVI and
CSD = AD and
It is not an ALI and
Interval:> 6,000 FC*
Type: GVI and
CSD = AD and
It is not an ALI and
Interval:> 6,000 FC*
All candidate tasks for the zonal program are analyzed by the Zonal Working Group in order to define if the zonal program can cover these
tasks or if these tasks will be kept in the related program.
STANDARD ZONAL ANALYSIS TASK CONSOLIDATION STANDARD ZONAL ANALYSIS TASK CONSOLIDATION
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
TASK CONSOLIDATION - EXAMPLE TASK CONSOLIDATION - EXAMPLE
Structural WG
GVI 6,000 FC
Structural WG
GVI 6,000 FC
YES YES
Candidate tasks Candidate tasks
GVI 12,000 FH GVI 12,000 FH
ZONAL STD GVI
12,000 FH
ZONAL STD GVI
12,000 FH
GVI 6,000 FC ~
7,980 FH
GVI 6,000 FC ~
7,980 FH GVI 18,000 FH GVI 18,000 FH
Systems &
Powerplant WG
GVI 18,000 FH
Systems &
Powerplant WG
GVI 18,000 FH
GVI 6,000 FH GVI 6,000 FH
ZWG
acceptance
ZWG
acceptance YES YES
Final Result Final Result
Example 1 Example 1
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
Structural WG
GVI 6,000 FC
Structural WG
GVI 6,000 FC
YES YES
Candidate tasks Candidate tasks
GVI 12,000 FH GVI 12,000 FH
ZONAL STD GVI
12,000 FH
ZONAL STD GVI
12,000 FH
GVI 18,000 FH GVI 18,000 FH
Systems &
Powerplant WG
GVI 18,000 FH
Systems &
Powerplant WG
GVI 18,000 FH
GVI 12,000 FH GVI 12,000 FH
ZWG
acceptance
ZWG
acceptance NO NO
Final Result Final Result
Example 2 Example 2
Remain in the Structural
Program
Remain in the Structural
Program
TASK CONSOLIDATION - EXAMPLE TASK CONSOLIDATION - EXAMPLE
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
ZONE CONTAINS
WIRING
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
PERFORM ENHANCED ZONAL ANALYSIS ZONE
CONTAINS
WIRING
START
IDENTIFY AIRCRAFT ZONES and
ITEM OF ANALYSIS
LIST DETAILS OF ZONE
PERFORM STANDARD ZONAL ANALYSIS
YES
NO
NO FURTHER ACTION
ZONE CONTAINS
WIRING
ZONAL ANALYSIS FLOWCHART ZONAL ANALYSIS FLOWCHART
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
Overview of the MSG-3 Zonal Analysis
Standard Zonal Analysis Procedures
Enhanced Zonal Analysis Procedures
MSG-3 Zonal Analysis Example
CONTENTS
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
EWIS DEFINITION EWIS DEFINITION
EWIS is not (25.1701(b))
Electrical equipment or avionics qualified to acceptable environmental conditions and testing procedures.
Portable electrical devices not part of airplane's type design.
Fiber optics.
An EWIS is (per new 25.1701(a))
Any wire, wiring device, or combination of these, including
termination devices, installed in any area of the airplane for
the purpose of transmitting electrical energy between two or
more intended termination points....
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
EWIS OBJECTIVE EWIS OBJECTIVE
Revises the EZAP to include specific approach for wiring
inspection. This new requirement is based on FAA AC 25-27, which
was implemented on December, 10th 2007. The European Authority
required similar analysis.
The new rule addresses the concern about the lack of proper wiring
inspections, helping the improvement of the Instructions for Continued
Airworthiness (ICA) for wiring systems.
General Visual Inspection, Detailed Inspections or other tasks to
minimize the presence of combustible materials.
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
EXAMPLES EXAMPLES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
SELECTION OF WIRING INSPECTION LEVEL AND INTERVAL
INSPECTION LEVEL DEFINITION
Zone Size Based on comparing all the zones in the aircraft: small,
medium or large.
Zone Density Degree of cluster in the zone: low, medium or high.
Potential effects of fire in the Zone Potential for loss of multiple
functions and the resulting effect on continued safe operation of the
airplane: low, medium or high.
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
INSPECTION LEVEL DEFINITION
PROPOSED TASKS:
ZONAL GVI + STAND ALONE GVI AND/OR DET OF SOME WIRING
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
SELECTION OF WIRING INSPECTION LEVEL AND INTERVAL
INTERVAL DEFINITION
Hostility of Environment: Passive, moderate or severe.
Likelihood of Accidental Damage: Passive, moderate or severe.
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
INTERVAL DEFINITION
PROPOSED INTERVAL
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
ENHANCED ZONAL ANALYSIS PROCEDURES ENHANCED ZONAL ANALYSIS PROCEDURES
The information contained herein is property of Embraer and shall not be copied or used without Embraers written consent
EZAP CONSOLIDATION EZAP CONSOLIDATION
EZAP
DET 18,000 FH
EZAP
DET 18,000 FH
Candidate tasks Candidate tasks
SFAR 88 / 25.981
GVI STA 6,000 FH
SFAR 88 / 25.981
GVI STA 6,000 FH
ZONAL STD
GVI 12,000 FH
ZONAL STD
GVI 12,000 FH
Final
Result
Final
Result
EZAP
GVI 18,000 FH
EZAP
GVI 18,000 FH
ZONAL STD
GVI 12,000 FH
ZONAL STD
GVI 12,000 FH
EZAP
DET 18,000 FH
EZAP
DET 18,000 FH
ZONAL STD
GVI 12,000 FH
ZONAL SECTION
ZONAL STD
GVI 12,000 FH
ZONAL SECTION
EZAP
DET 18,000 FH
SYS SECTION
ATA 20
EZAP
DET 18,000 FH
SYS SECTION
ATA 20
SFAR 88 / 25.981
GVI STA 6,000 FH
SFAR 88 / 25.981
GVI STA 6,000 FH
SFAR 88 / 25.981
GVI STA 6,000 FH
SYS SECTION
ATA 28
SFAR 88 / 25.981
GVI STA 6,000 FH
SYS SECTION
ATA 28