SDR ZKFR201111153188

Service difficulty report · Connector · Hawbee 4000

Difficulty date: November 15, 2011
Submitted: December 27, 2011
Operation: Air carrier
Aircraft: N78KN
Make and model: Hawbee 4000
Aircraft serial: RC31
Aircraft time: 684 hours, 420 cycles
System (JASC): 2197 · Air Conditioning System Wiring
Part: Connector
Condition: Disconnected
Location: Blower
Stage of operation: IN
How discovered: V
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

WHILE CHANGING LT AFT BAY HEAT EXCHANGER FOUND CB PANEL 3, PLUG P1634D, PIN: M FOR WIRE A201-W01-16 CAPPED AND TIED BACK CAUSING LT AFT BAY BLOWER TO BE INOPERATIVE. MECHANIC BELIEVES THIS TO BE DONE DURING ACFT PRODUCTION OR AT BLOCK 20 UPGRADE. MECHANIC RECOMMENDS OTHER OPERATORS CHECK FOR OPERATION AS THERE IS NO COCKPIT INDICATION WHEN THESE FANS ARE INOP AND THEY ARE FOR HEAT PROTECTION FOR THE COMPOSITE REAR PRESSURE BULKHEAD STRUCTURE. SEE CONTROL ZKFR113188A FOR OTHER SN.