AD 2018-03-04 Airworthiness Directives; Rosemount Aerospace, Inc. Pitot Probes

This AD applies to Rosemount Aerospace, Inc. Model 851AK pitot probes that were repaired by CSI Aerospace Inc. and have a serial number listed in paragraph (c)(1) of this AD that are known to be installed on but not limited to the airplanes listed in paragraph (c)(2) of this AD. Pitot probes that were repaired by CSI Aerospace Inc. that have a repair date of August 1, 2014, or later, are excluded from the applicability. (1) 24352, 53257, 61568, 68168, 69913, 69953, 71007, 71802, 71820, 73010, 73406, 75549, 75555, 80489, 80491, 83809, 84200, 84495, 84911, 84922, 85317, 85731, 87225, 87234, 87235, 87241, 87272, 87512, 87551, 87909, 88192, 88622, 90538, 91606, 93291, 93292, 93293, 93305, 93941, 93948, 93960, 94258, 94304, 94559, 94814, 94819, 95150, 95849, 97405, 98194, 99498, 99509, 100105, 100111, 100127, 100313, 100741, 101374, 101500, 102037, 102054, 102309, 102502, 104604, 106134, 106139, 106381, 106905, 107251, 107405, 107406, 107450, 107887, 108174, 108302, 108858, 108859, 108967, 108970, 109119, 109122, 109124, 109128, 109383, 109393, 109394, 109467, 109474, 109488, 109521, 109524, 109537, 109577, 109795, 109798, 109799, 109808, 109810, 109946, 109954, 109958, 109962, 109996, 110323, 110324, 110327, 110338, 110611, 110626, 110880, 110895, 110956, 111061, 111066, 111315, 111320, 111432, 111561, 111571, 111578, 111802, 111807, 112229, 112280, 112343, 112497, 112646, 112657, 112677, 112779, 112781, 112783, 112979, 112993, 113025, 113026, 113129, 113151, 113382, 113721, 113758, 113837, 113838, 113843, 113845, 113920, 113934, 114130, 114147, 114152, 114157, 114223, 114239, 114376, 114572, 114813, 114869, 114872, 114959, 114962A, 114966, 115428, 115713, 116046, 116249, 116253, 116255, 116271, 116424, 116557, 116734, 116792, 116994, 117022, 117144, 117164, 117310, 117412, 117414, 117426, 117427, 117428, 117587, 117961, 118111, 118119, 118234, 118331, 118637, 118639, 118770, 118938, 119115, 119281, 119290, 119414, 119441, 119496, 119587, 119593, 119694, 119695, 119737, 119852, 120456, 120461, 120728, 120823, 120825, 120826, 120829, 121040, 121041, 121110, 121116, 121145, 121172, 121320, 121322, 121524, 121661, 121834, 121852, 122286, 122662, 122843,122934, 122935, 123286, 123289, 123330, 123745, 123746, 123753, 123767, 124144, 124385, 124390, 124396, 124890, 125016, 125021, 125077, 125163, 125174, 126785, 127449, 127894, 127899, 128302, 128307, 129503, 130371, 130377, 130688, 131422, 131423, 131752, 132065, 132067, 132297, 132825, 133103, 133161, 133220, 133291, 133310, 133313, 133394, 133396, 133512, 133521, 134100, 134102, 134403, 134535, 134537, 134639, 134675, 134681, 135136, 135234, 135246, 135250, 135554, 135561, 135568, 135735, 135743, 136075, 136208, 137049, 137398, 137543, 137544, 137642, 139076, 139081, 139433, 139444, 139691, 139694, 139759, 139763, 139971, 139976, 140188, 140563, 140565, 140643, 140649, 140650, 141161, 141356, 141362, 141497, 141501, 141605, 141607, 142426, 142765, 142774, 142775, 143070, 143405, 143409, 143411, 143418, 143816, 143818, 143988, 143992, 143999, 144591, 144814, 144816, 144976, 144977, 146116, 146835, 147421, 148524, 148765, 148777, 149460, 149464, 149510, 149941, 150196, 150206, 150211, 150212, 150214, 150542, 150725, 151077, 151086, 151095, 151493, 152097, 152819, 152922, 152969, 152974, 152981, 153232, 153233, 153453, 153454, 153625, 153628, 153635, 153641, 153956, 153962, 153966, 153984, 154007, 154156, 154704, 154721, 154738, 154741, 155003, 155042, 155045, 155238, 155278, 155517, 156022, 156025, 156222, 156526, 156529, 156672, 157023, 157137, 157143, 158393, 158790, 158797, 159033, 159036, 159413, 159440, 159891, 160000, 160002, 160006, 160456, 160459, 160463, 160466, 160468, 161137, 161139, 161159, 161177, 161184, 161185, 161363, 161364, 161366, 162376, 162384, 162674, 162682, 162685, 162688, 163176, 163178, 163181, 163557, 163559, 163602, 164217, 164279, 164746, 164750, 164907, 164908, 165135, 165259, 165459, 165805, 166235, 166324, 166325, 166326, 166331, 166477, 166481, 166608, 166671, 166673, 166892, 167029, 167030, 167035, 167037, 167182, 167341, 167556, 167559, 167705, 167707, 167709, 167763, 167764, 167765, 167766, 167811, 195627, 195628, 195706, 195707, 195710, 195796, 195833, 195876, 196041, 196042, 196045, 196137, 196234, 196397, 196400, 196401, 196403, 196498, 196500, 196761, 197097, 197137, 197140, 197143, 197238, 197657, 197874, 198528, 198687, 198775, 198780, 198788, 198872, 198878, 199034, 199042, 199187, 199441, 199613, 199616, 199669, 200293, 200324, 200534, 200535, 200538, 200556, 200737, 200738, 200739, 200793, 200830, 200834, 200872, 201576, 201685, 201733, 201892, 201893, 201964, 202053, 202305, 202306, 202469, 202471, 202472, 202596, 202625, 202633, 202760, 202381, 202879, 202901, 203010, 203016, 203147, 204629, 204665, 204714, 204820, 204821, 204822, 205249, 205253, 205329, 205335, 205526, 205527, 205529, 205700, 205882, 205967, 206273, 206406, 206436, 206441, 206646, 207019, 207020, 207021, 207364, 207369, 207683, 207684, 207837, 207849, 207850, 208206, 208381, 208394, 208396, 208543, 209148, 209698, 209704, 209707, 212176, 212525, 212697, 212700, 213952, 213953, 214085, 214089, 214144, 214795, 214803, 215392, 215476, 216214, 216509, 216515, 216951, 216955, 216957, 217368, 217369, 217382, 217441, 217708, 217805, 218112, 218610, 218613, 218757, 218761, 218958, 218965, 218967, 218970, 218976, 219226, 219228, 219233, 219236, 219411, 219418, 219832, 219840, 219842, 219915, 220990, 220991, 221197, 221286, 221635, 224540, 224700, 224701, 224704, 224707, 224876, 225257, 225262, 225586, 225907, 225910, 225974, 226133, 226136, 226465, 226466, 226467, 227159, 227174, 227836, 227837, 229277, 230190, 230191, 230192, 230193, 231082, 232015, 232681, 232684, 234534, 235621, 235628, 238097, 238179, 239755, 239760, 239956, 239964, 242109, 242998, 243347, 243350, 243351, 245230, 246442, 246792, 246851, 247007, 247302, 250747, 253132, 256326, 256327, 258614, 258861, 258865, 260508, 262743, 262744, 263643, 263644, 263645, 263651, 263700, 264117, 264119, 264122, 264123, 264125, 264193, 264738, 265208, 265210, 265655, 265656, 265657, 265658, 268055, 268562, 268564, 268565, 268566, 272372, 272592, 273833, 273835, 275276, 275658, 275663, 277554, 280433, 280435, 296902, 298059, and 298843. (2) DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A, C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), MD-88, MD-90-30, and 717-200.

Comply with this AD within the compliance times specified. If the actions required in paragraphs (g) and (h)(1) of this AD have already been done before March 16, 2018 (the effective date of this AD), then only paragraph (h)(2) of this AD applies.

Within 30 days after March 16, 2018 (the effective date of this AD), inspect the airplane to determine the number of pitot probes identified in paragraph (c)(1) of this AD that are installed on the airplane. This inspection can be performed through a review of maintenance records in lieu of a physical inspection of the product if the serial number and repair date can be positively identified from the review. If the serial number cannot be positively identified from a review of the aircraft's maintenance records or from the outside of the airplane, this may require the pitot probe to be removed from the fuselage to view the serial number at the inner base of the probe. If it is determined that no more than one pitot probe identified in paragraph (c)(1) of this AD is installed on the airplane, no further action is required except for the ongoing requirement in paragraph (h)(2) of this AD.

This AD was prompted by a report that the pitot probes are indicating the wrong airspeed during flight. We are issuing this AD to prevent incorrect airspeed indications during flight, which could lead to loss of control. Due to design redundancy, this is only applicable if more than one deficient probe is installed.

None.