Service difficulty report · Relay · Emb ERJ170200LR

Difficulty date
November 5, 2015
Submitted
November 5, 2015
Operation
Air carrier
Aircraft
N201NN
Make and model
Emb ERJ170200LR
Aircraft serial
17000461
Aircraft time
1,764 hours, 871 cycles
Part
Relay
Part number
M83726353001P
Part serial
8005597638
Condition
Inoperative
Location
Bleed Air Sys
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

BLEED 1 & 2 OVERPRESS ON CLIMB OUT, BLEED 1 OVERPRESS CLEARED AFTER RUNNING QRH 2.7, BLEED 2 OVERPRESS DID NOT. REPLACED NR 2 BLEED OVERPRESSURE AUX RELAY IAW SWPM 20-32-0 & BLEED OVERPRESS SWITCH ON NR 2 ENG BLEED IAW AMM 36-14-0, NO HELP BLEED 2 OVERPRESS STILL ON EICAS. RE-INSTALLED ORIGINAL BLEED OVERPRESS SWITCH IAW AMM 34-14-01. REMOVED & INSTALLED SERVICEABLE HPSOV OVERPRESS SWITCH IAW AMM 36-14-08, NO HELP. BLEED 2 OVERPRESS STILL ILLUMINATED ON EICAS. PERFORMED FHDB DOWNLOAD FOR ANALYSIS. RE-INSTALLED ORIGINAL HPSOV OVERPRESS SWITCH IAW AMM 36-14-08. INSTALLED SERVICEABLE AUX RELAY K508 IAW SWPM 20-32-01 BLEED 2 OVERPRESS MSG CLEARED FROM EICAS. END OF TROUBLESHOOTING IAW FIM TASK 36-14-00-810-818-A. ACFT OK FOR SERVICE.

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