B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 480; Flight Crew Type 6000
Communication Breakdown; Confusion; Distraction
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Illness / Injury; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control; Flight Crew Took Evasive Action; General Physical Injury / Incapacitation
Airport; Human Factors; Procedure
Follow Me Truck guided aircraft to a different ramp location than the one normally used perhaps because of heavy rain. I stopped aircraft and released the parking brake after I received the overhead chocks in hand signal. Completed the parking check and from the corner of my eye noticed the ground Marshaller waving his arms and jumping. It took a second or two and I noticed the aircraft rolling backwards. I applied the brakes and the aircraft stopped. No passengers were affected however; the forward flight attendants reported that flight attendant in the aft galley had hurt his knee due to the unexpected sudden stop. I asked him if he required any assistance and he declined. We were told by the ground handling personnel that the ramp is uneven in the area that we were parked in. The flights continued with an outbound delay due to customer service issues with a different pilot crew and same in-flight crew.
[Report contains no additional information.]
A B737 was parked at a location the crew was not accustomed to and after parking rolled back because of an uneven ramp. When the brakes were finally set to stop the aircraft an after flight attendant suffered a knee injury.