B767 flight crew reported the parking brake was incorrectly applied which resulted in aircraft movem...

Attributes
ACN	1600459
Time
Date	201812
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Aircraft 1
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Windshield Wiper System
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 160 Flight Crew Total 11879 Flight Crew Type 9473
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control

Narrative:

Heavy rain on arrival at ZZZZ. Taxi lines difficult to see. Limited peripheral vision to notice movement after parking. Captain's first leg on a 767-300 after oe. Clearing runway the captain's windshield wiper would not turn off and stow. We tried to park it several times with no success. This created a major distraction on taxi in at a destination new to the captain. As we approached the hard stand I tried to park the wiper one last time. In my haste I accidentally turned the APU switch off. This created a further distraction. Captain set the brakes and announced brakes set. Engines remained on while we waited for the APU to restart. Turns out the parking brake did not set completely. The international relief officer (relief officer) announced that we were moving. I immediately applied brakes and stopped the aircraft. The aircraft moved about 5 feet past the stop mark and lurched when I aggressively stopped. Everyone was seated and the seatbelt sign still on; so no one was injured. The wiper finally did stow. We debriefed the threats of the wiper; unfamiliarity of the captain with ZZZZ; heavy rain; the APU shutdown and restart; and our [fatigue]. Vigilance of the international relief officer during the entire taxi in was key to the successful outcome of this event.

Original NASA ASRS Text

Title: B767 flight crew reported the parking brake was incorrectly applied which resulted in aircraft movement at gate.

Narrative: Heavy rain on arrival at ZZZZ. Taxi lines difficult to see. Limited peripheral vision to notice movement after parking. Captain's first leg on a 767-300 after OE. Clearing runway the Captain's windshield wiper would not turn off and stow. We tried to park it several times with no success. This created a major distraction on taxi in at a destination new to the Captain. As we approached the hard stand I tried to park the wiper one last time. In my haste I accidentally turned the APU switch off. This created a further distraction. Captain set the brakes and announced brakes set. Engines remained on while we waited for the APU to restart. Turns out the parking brake did not set completely. The IRO (Relief Officer) announced that we were moving. I immediately applied brakes and stopped the aircraft. The aircraft moved about 5 feet past the stop mark and lurched when I aggressively stopped. Everyone was seated and the seatbelt sign still on; so no one was injured. The wiper finally did stow. We debriefed the threats of the wiper; unfamiliarity of the Captain with ZZZZ; heavy rain; the APU shutdown and restart; and our [fatigue]. Vigilance of the IRO during the entire taxi in was key to the successful outcome of this event.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.