Cessna 402/402C/B379 Businessliner/Utiliner
Air Traffic Control Fully Certified
Distraction; Situational Awareness
ATC Issue All Types; Aircraft Equipment Problem Critical; Airspace Violation All Types
General Declared Emergency
Human Factors
I was working all sectors combined. An aircraft departed the airport and soon after said he had a 'flap failure' and needed to return to the airport. ATC declared an emergency for the aircraft. While I was getting all the needed information from the emergency aircraft and talking with the CIC; a C402 was on a downwind vector for ILS Runway 5. Because I was focused on the emergency; the C402 got a late base turn which put him right on the boundary of N90's airspace. A better scan from myself and CIC would have prevented this.
TRACON Controller distracted by an emergency allowed an aircraft to stray onto the boundary of another facility's airspace without a point out.