The re-import would be eligible for the duty exemption contained in notification 52/2003 customs as per entry 14 of the Annexure I to such notiification which reads as under
(i) Goods re-imported (other than specified in Annexure–VII to this notification) within three years from the date of exportation, for repair or reconditioning.
Provided that such re-imported goods are re-exported within one year of the date of re-importation.
Further para 2.49 of the FTP 2015-20 provides as below
2.49 Export of Repaired Goods
Goods or parts thereof, except restricted under ITC (HS), on being exported and found defective, damaged or otherwise unfit for use may be imported for repair and subsequent re-export. Such goods shall be allowed clearance without an Authorisation and in accordance with customs notification. To that extent the exporter shall return the benefits /incentive availed on the returned goods. If the item is ‘restricted’ for import, the exporter shall require an import license.
Thereby, such goods should be repaired and re-exported wihin 1 year from re-importation and no duties payable at the time of reimport.