Airframe & System Upgrades

H155
Sand filter installation
SB number : EC155-71-61-01 (R00)
Applicable to version(s) : B, B1
The purpose of this upgrade is to protect the engines against sand infiltrations which may cause premature wear of blading.
The dynamic sand filters are designed to protect the turboshaft engines in sand-laden air, thus preventing premature wear of compressor blades.
This upgrade consists in:
- modifying the firewalls (ALL CONFS),
- installing the electrical wiring (ALL CONFS),
- replacing the MGB cowlings and modifying the removable engine cowlings (ALL CONFS),
- modifying the P2 air system (ALL CONFS).
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4.625 kg

On Request

14 day(s)

PRE-POST REQUISITE / EFFECTIVITY

Not applicable.

ADDITIONAL INFORMATION : Corresponds to modifications 365R001079.00, 365R001079.01 and 365R001079.02. The “Sand prevention filters, dynamic type installation” does affect the aircraft flight performance. Please refer to the appropriate section of the Basic Flight Manual and Supplements.

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Technical filtering assistant
CONFIGURATION MATRIX
CONFIGURATION PRE-POST MOD STATUS  
1 POST MOD 0750B32, Helicopter in version B, Service Bulletin No. 53-019 applied, POST MOD 0771C26, POST MOD 0779B33, POST MOD 0739B78, POST MOD 0721B72 This is my configuration
2 Service Bulletin No. 53-019 applied, POST MOD 0771C26, Sand filter installation, POST MOD 0779B33, POST MOD 0739B78, POST MOD 0721B72, Helicopter in version B1, POST MOD 0739C31, POST MOD 0750B32 This is my configuration
3 Drawing 365A671492.00, POST MOD 0721B76 This is my configuration
4 POST MOD 0721B76, POST MOD 0724C37 or Drawing 365A671496.01, POST MOD 0724C38 This is my configuration
5 POST MOD 0721B76 This is my configuration
6 POST MOD 0724C37 or Drawing 365A671496.01, POST MOD 0724C38, Helicopter in version B1, POST MOD 365P088931.00 This is my configuration
7 POST MOD 0724C37 or Drawing 365A671496.01, POST MOD 0724C38, Helicopter in version B1, POST MOD 365P088931.00 This is my configuration
8 POST MOD 0724C37 or Drawing 365A671496.01, POST MOD 0724C38, Helicopter in version B1, POST MOD 365P088931.00, POST MOD 365P088931.10 This is my configuration
9 POST MOD 365P088931.00, POST MOD 365P088931.10, IFE (In-Flight Entertainment) system installation, POST MOD 0724C37 or Drawing 365A671496.01, POST MOD 0724C38, Helicopter in version B1 This is my configuration

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