II is right. NHV lost the contract but sent the 175s as a hail mary sales pitch to Tullow. It didn't work and PHI will show up later this year.
If the NHV 175s are ADS-B equipped, they should show up on Flight24 (the S92s and 189s already do). That they are not at all for the last 3 days of last week (I don't have all day to check every day!) says that with Tullow's project coming on line, NHV are back using the N3s and the 175s are broken again.
Anyone?