Emb-1705 captain inadvertently deployed the passenger oxygen masks while inflight.

Attributes
ACN	1698053
Time
Date	201911
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Oxygen System/Pax
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown

Narrative:

On departure from runway xxl in ZZZZ initial climb through approximately 2;000-2;500 ft. The captain inadvertently deployed the passenger oxygen masks. We [requested priority handling and] requested 8;000 ft. As level off altitude. Requested vectors and set up for and reviewed the approach for ILS runway xxl. Used a 12-15 mile extended downwind to conduct overweight landing procedures in the QRH; while coordinating with ATC and advising dispatch via ACARS. Aircraft X executed a long straight in approach back to ZZZZ. Landing weight on approach was approximately 83;000 lbs.; decent rate on touchdown was well controlled and was approximately 120 ft. Per minute. Flight conditions were visual flight rules during twilight hours. Aircraft cockpit lighting was dimmed for low light operations. Aircraft taxied back to gate without emergency assistance.

Original NASA ASRS Text

Title: EMB-1705 Captain inadvertently deployed the passenger oxygen masks while inflight.

Narrative: On departure from Runway XXL in ZZZZ initial climb through approximately 2;000-2;500 ft. The Captain inadvertently deployed the passenger oxygen masks. We [requested priority handling and] requested 8;000 ft. as level off altitude. Requested vectors and set up for and reviewed the approach for ILS Runway XXL. Used a 12-15 mile extended downwind to conduct Overweight Landing procedures in the QRH; while coordinating with ATC and advising Dispatch via ACARS. Aircraft X executed a long straight in approach back to ZZZZ. Landing weight on approach was approximately 83;000 lbs.; decent rate on touchdown was well controlled and was approximately 120 ft. per minute. Flight conditions were Visual Flight Rules during twilight hours. Aircraft cockpit lighting was dimmed for low light operations. Aircraft taxied back to gate without emergency assistance.

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.