Hawker 800 flight crew reported landing gear would not retract after takeoff.

Attributes
ACN	1764377
Time
Date	202010
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	BAe 125 Series 800
Operating Under FAR Part	Part 135
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Captain
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 110 Flight Crew Total 5100 Flight Crew Type 650
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

After [we] took off from ZZZ runway xx; positive rate was checked; the plane was airborne; and the first officer called positive rate; and I answered landing gear up. He tried to move the landing gear lever to 'up' position and he couldn't do; then we got a squat and stall ident lights. We proceeded as per abnormal procedure check list and requested to fly back to the airport and made a safe landing.

Original NASA ASRS Text

Title: Hawker 800 flight crew reported landing gear would not retract after takeoff.

Narrative: After [we] took off from ZZZ RWY XX; positive rate was checked; the plane was airborne; and the First Officer called positive rate; and I answered landing gear up. He tried to move the landing gear lever to 'up' position and he couldn't do; then we got a squat and stall ident lights. We proceeded as per abnormal procedure check list and requested to fly back to the airport and made a safe landing.

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.