B757 captain reported an aft cabin door handle popped up during flight.

Attributes
ACN	1584302
Time
Date	201810
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Exterior Pax/Crew Door
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 156 Flight Crew Total 20500 Flight Crew Type 2430
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown

Narrative:

At cruise altitude (above 30;000) overhead panel door light illuminated with EICAS left aft ent door msg. Called flight attendant (flight attendant) to check door. Received report that the door handle popped up a few inches. When handle was pushed down; cockpit indications went out. When handle was released indications returned shortly afterwards. After several intermittent on/off cycles; asked flight attendant if handle could be secured down. Flight attendant and deadheading pilot came up with a solution and informed cockpit. No further nuisance indications. Flight attendant informed cockpit that several seatbelt extensions and tuff ties were used to secure door. Ca (captain) directed that straps and ties be removed when preparing for landing to allow emergency use of door if required. Uneventful landing made. 757 QRH states that if pressurization is normal (it was) then the door is in a safe configuration and to continue normal flight.

Original NASA ASRS Text

Title: B757 Captain reported an aft cabin door handle popped up during flight.

Narrative: At cruise altitude (above 30;000) overhead panel door light illuminated with EICAS L AFT ENT DOOR msg. Called FA (Flight Attendant) to check door. Received report that the door handle popped up a few inches. When handle was pushed down; cockpit indications went out. When handle was released indications returned shortly afterwards. After several intermittent on/off cycles; asked FA if handle could be secured down. FA and deadheading pilot came up with a solution and informed cockpit. No further nuisance indications. FA informed cockpit that several seatbelt extensions and tuff ties were used to secure door. CA (Captain) directed that straps and ties be removed when preparing for landing to allow emergency use of door if required. Uneventful landing made. 757 QRH states that if pressurization is normal (it was) then the door is in a safe configuration and to continue normal flight.

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.