A B737 captain charged his ipad during a turnaround preflight and accidently pulled the landing gear...

Narrative:

This situation was not a compliance or violation event; but a general information event. During our ground time; both the first officer (first officer) and I were charging our ipads. I remember seeing the charging cord against the circuit breaker (circuit breaker) panel behind the first officer's seat because of the way I had my ipad seated. I believe that at some point by moving the cord; it inadvertently pulled one of the landing gear cbs. Unfortunately; I did not catch this before I took my seat for pushback. I was the pilot flying and right after takeoff; I called for the landing gear up. The first officer raised the gear handle but only went to the mid-position. Things got a little busy then. I continued to fly the plane and the first officer requested a level off. I was thinking back to the cord next to the circuit breaker during our ground time. In the past; I have had a couple of times where the seatbelt shoulder harness had pulled the landing circuit breaker and figured out that was what had probably happened to us with the charging cord. We started to run the checklist for landing gear will not retract. I looked back and saw that the circuit breaker was out. I then pushed the breaker in and directed the first officer to retract the gear which did come up at that time. We then continued the climb and proceeded with the flight. Upon arriving; we did notify maintenance and filled the logbook out with an info only write-up since we did reset a circuit breaker. We explained to them what had happened and that I was fairly certain that at some point the charging cord must have snagged the circuit breaker and pulled it out. In the future I will continue to do a thorough check of the circuit breaker panel before I take my seat; especially with the charging cord hanging across the first officer panel.

Original NASA ASRS Text

Title: A B737 Captain charged his iPad during a turnaround preflight and accidently pulled the landing gear control circuit breaker while removing the charging cable. After takeoff when the landing gear did not retract and while completing the QRH; the pulled circuit breaker was reset.

Narrative: This situation was not a compliance or violation event; but a general information event. During our ground time; both the First Officer (FO) and I were charging our iPads. I remember seeing the charging cord against the circuit breaker (CB) panel behind the FO's seat because of the way I had my iPad seated. I believe that at some point by moving the cord; it inadvertently pulled one of the landing gear CBs. Unfortunately; I did not catch this before I took my seat for pushback. I was the Pilot Flying and right after takeoff; I called for the landing gear up. The FO raised the gear handle but only went to the mid-position. Things got a little busy then. I continued to fly the plane and the FO requested a level off. I was thinking back to the cord next to the CB during our ground time. In the past; I have had a couple of times where the seatbelt shoulder harness had pulled the landing CB and figured out that was what had probably happened to us with the charging cord. We started to run the checklist for Landing Gear Will Not Retract. I looked back and saw that the CB was out. I then pushed the breaker in and directed the FO to retract the gear which did come up at that time. We then continued the climb and proceeded with the flight. Upon arriving; we did notify Maintenance and filled the logbook out with an Info Only write-up since we did reset a CB. We explained to them what had happened and that I was fairly certain that at some point the charging cord must have snagged the CB and pulled it out. In the future I will continue to do a thorough check of the CB panel before I take my seat; especially with the charging cord hanging across the FO panel.

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.

Attributes
ACN	1315155
Time
Date	201512
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Next Generation Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Tablet
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown

A B737 captain charged his ipad during a turnaround preflight and accidently pulled the landing gear control circuit breaker while removing the charging cable. After takeoff when the landing gear did not retract and while completing the QRH; the pulled circuit breaker was reset.