Loss of green card
An LPR whose Form I-551 is lost, stolen, or expired may apply for a boarding foil at the consulate.
An applicant requesting a boarding foil to replace a Form I-551 that was lost or stolen must present a police report (if applicable and available) documenting when the Form I-551 was lost or stolen.
You may send an email to chennaiexp@state.gov to seek an appointment. There is no fee charged when you apply for the boarding foil. However you must pay the courier fee of Rs. 387 at the VFS office after the officer has approved the issuance of the boarding foil.
You must present a passport with the Alien Documentation and Identification System stamp.
The boarding foil may be valid for no more than 30 days, single entry.