Service difficulty report · Ram Air Turb · Emb ERJ170200LR

Difficulty date
July 2, 2019
Submitted
July 2, 2019
Operation
Air carrier
Aircraft
N616CZ
Make and model
Emb ERJ170200LR
Aircraft serial
17000209
Aircraft time
31,206 hours, 19,103 cycles
Part
Ram Air Turb
Part number
1703781A
Part serial
0452
Condition
Jammed
Location
Zone 100
Part time
31,206 hours, 19,103 cycles
Stage of operation
IN
How discovered
C
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING A SCHEDULED FUNCTIONAL TEST OF THE RAM AIR TURBINE PER TASK CARD 24-23-00-004, ONE OF THE TURBINE BLADES CONTACTED AND JAMMED AGAINST THE INTERNAL FUSELAGE SKIN AROUND THE CUTOUT AFTER MANUALLY DEPLOYING THE RAT. THE RAT DID NOT DEPLOY FULLY, WHICH IS A MALFUNCTION THAT MAY ENDANGER THE SAFE OPERATION OF THE AIRCRAFT, AND IS THEREFORE SDR-REPORTABLE PER THE GMM CHAPTER 190. THE DAMAGE TO THE INTERNAL STRUCTURE OF THE FUSELAGE WAS NON-SIGNIFICANT SUPERFICIAL DAMAGE. THE AFFECTED RAT BLADE WAS BENT OUT OF SERVICEABLE LIMITS, NECESSITATING THE REPLACEMENT OF THE ENTIRE RAT.

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