One more pilot was arrested here for getting a licence on the basis of forged documents, Delhi Police said on Friday.
Saif Misbah was arrested from Mayapuri area in south Delhi on Thursday after Directorate General of Civil Aviation (DGCA) forwarded three new names to police in the scam.
During the interrogation, Misbah admitted that he used forged marksheets to obtain a commercial pilot licence.
"We are trying to identify from whom Saif Misbah had obtained the document," said a senior police officer.
Delhi Police have so far arrested 12 people in the fake pilot licence scam. Two pilots have been arrested by Rajasthan Police.
Three pilots and a flying instructor against whom a lookout notice was issued on March 28 are still on the run.
They are pilots Swaran Singh Talwar of MDLR airlines, Syed Habib Ali and Bhupinder Singh, who have not joined any airline, and instructor D. Asatkar.
All airports and ports have been put on alert to prevent them from fleeing the country.